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Chemistry Proceedings

Chemistry Proceedings is an open access journal dedicated to publishing findings resulting from conferences, workshops, and similar events, in all areas of chemistry. The conference organizers and proceedings editors are responsible for managing the peer review process and selecting papers for conference proceedings.

Imprint Information Journal Flyer Open Access ISSN: 2673-4583

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Vol. 19

IOCS 2025

3 articles

Table of Contents

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Vol. 18

ECSOC 2025

149 articles

Table of Contents

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Vol. 17

ECCS 2025

13 articles

Table of Contents

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Vol. 16

ECSOC 2024

120 articles

Table of Contents

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Vol. 15

IOCC 2024

5 articles

Table of Contents

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Vol. 14

ECSOC 2023

115 articles

Table of Contents

Latest Articles

12 pages, 9659 KB

Open AccessProceeding Paper

Solubility of Metals in Semiconductors: Insights from Iron Silicide

by Sopheap Sam and Hiroshi Nakatsugawa

Chem. Proc. 2026, 21(1), 1; https://doi.org/10.3390/chemproc2026021001 (registering DOI) - 6 Aug 2026

Metal doping is an effective strategy for tuning and improving the transport properties of semiconductors such as iron silicide. However, when the dopant concentration exceeds its solubility limit, secondary metallic phases can form, degrading the desired semiconductor properties and overall material performance. Therefore, [...] Read more.

Metal doping is an effective strategy for tuning and improving the transport properties of semiconductors such as iron silicide. However, when the dopant concentration exceeds its solubility limit, secondary metallic phases can form, degrading the desired semiconductor properties and overall material performance. Therefore, a clear understanding of dopant solubility limits and phase stability is important for optimizing material properties. Here, we investigate the solid solution behaviors of metals in polycrystalline Fe_1−xM_xSi₂ (M = Mn, Co, and Ni) systems. The results show that increasing dopant concentration promotes the formation of metallic secondary phases and limits dopant incorporation into the β matrix. The estimated solubility limits are approximately 6.3% for Mn, 8.8% for Co, and 1.0% for Ni. Beyond the iron silicide system, the combined methodology provides a practical approach for determining dopant solubility in semiconductors, where local compositional saturation may occur before substantial changes in bulk phase fractions become apparent. Full article

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12 pages, 4714 KB

Open AccessProceeding Paper

Effect of Color on the Catalytic Performance of Cotton-Bound Photocatalysts

by Isabella Goveia, Verona Peterman, Genevieve Huynh and Rohit Bhide

Chem. Proc. 2026, 20(1), 2; https://doi.org/10.3390/chemproc2026020002 - 30 Jul 2026

There is an urgent and persistent need to design efficient and sustainable methods to manufacture chemicals on a large scale. Heterogeneous photocatalysts use light to drive organic reactions and offer high recyclability and improved efficiencies for chemical synthesis. However, a detailed study of [...] Read more.

There is an urgent and persistent need to design efficient and sustainable methods to manufacture chemicals on a large scale. Heterogeneous photocatalysts use light to drive organic reactions and offer high recyclability and improved efficiencies for chemical synthesis. However, a detailed study of these photocatalysts using standard laboratory analytical techniques is challenging due to their poor solubility. Successful application of heterogeneous photocatalysts in the chemical industry requires the development of a robust analytical technique that can be used as a predictive and scalable tool for their photocatalytic performance. Herein, we report a simple approach that uses the color of cotton-bound heterogeneous photocatalysts as a potential indicator of their performance. These photocatalysts were synthesized by covalently attaching perylene-based molecular photocatalysts to the surface of cotton using amino-substituted triethoxysilane as the linker. Colorimetry coupled with NMR analysis revealed two important findings: (i) cotton-bound photocatalysts catalyzed sulfide oxidation to sulfoxide under blue-light illumination, and (ii) a general relationship was observed between color intensity and catalytic performance, with darker samples generally exhibiting faster reaction rates. These findings suggest that color may serve as a simple and rapid tool for assessing photocatalyst performance. Future studies will focus on enhancing the reproducibility of photocatalyst binding procedures and validating the color–performance relationships in a wider range of color intensities of the cotton-bound photocatalysts. Full article

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9 pages, 3582 KB

Open AccessProceeding Paper

Investigation of New Additive Manufacturing DED Application for Waste-to-Hydrogen Conversion

by Svetlana Boshnakova

Chem. Proc. 2026, 20(1), 1; https://doi.org/10.3390/chemproc2026020001 - 27 Jul 2026

Relatively low-cost titanium carbide (TiC) materials and metal matrix composites (MMC) are proposed for waste-to-hydrogen conversion. Two types of steels are used as bases prepared from EN 10088 flat products, namely X2CrTi12 (1.4512, AISI 409) and X5CrNi18-10 (1.4301, AISI 304). TiC is mixed [...] Read more.

Relatively low-cost titanium carbide (TiC) materials and metal matrix composites (MMC) are proposed for waste-to-hydrogen conversion. Two types of steels are used as bases prepared from EN 10088 flat products, namely X2CrTi12 (1.4512, AISI 409) and X5CrNi18-10 (1.4301, AISI 304). TiC is mixed with TRIBALOY^® T-800 alloy in powder form and applied via laser-directed energy deposition (DED-LB) over the substrates. For the powder mixture, Fourier transform infrared spectroscopy (FT-IR) and differential scanning calorimetry (DSC) are performed. The raw materials are investigated for the processes that occur in them under heating. After the solidification of the molten mixture, grinding and polishing are performed to achieve a thin layer. The studies of the obtained MMC include interface zone assessment, hardness and Young’s modulus distribution, microstructural analysis, and visual defect evaluation. Advanced sensors for acoustic emission (AE) and Electrical Contact Resistance (ECR) provided characterization together with micro-scratch testing. The use of photoluminescence spectroscopy is proposed for the new composite materials. The electron transfer pathway can be studied with time-resolved spectroscopy. Renewable energy production by breaking down waste into hydrogen-rich syngas can be achieved through pyrolysis, followed by steam reforming and purification. The obtained novel materials show promising application solutions with increased durability, corrosion, and wear resistance. Full article

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1 pages, 127 KB

Open AccessEditorial

Statement of Peer Review

by Julio A. Seijas

Chem. Proc. 2025, 18(1), 149; https://doi.org/10.3390/ecsoc-29-18149 - 28 Apr 2026

In submitting conference proceedings to Chemistry Proceedings, the volume editors of the proceedings certify to the publisher that all papers published in this volume have been subjected to peer review administered by the volume editors [...] Full article

(This article belongs to the Proceedings of The 29th International Electronic Conference on Synthetic Organic Chemistry)

11 pages, 843 KB

Open AccessProceeding Paper

Determination of Pesticide Residues in Drinking Water Using the LC-MS/MS Method and Evaluation of the Results for 2023 and 2024

by Miroslava Kuzniarová, Milena Dömötörová, Martina Micháliková and Zuzana Lukačovičová

Chem. Proc. 2025, 19(1), 3; https://doi.org/10.3390/chemproc2025019003 - 20 Jan 2026

This study focuses on the determination of pesticide residues in drinking water in Slovakia using the LC-MS/MS method, covering a target list of approximately 90 pesticides selected according to the national drinking water risk assessment. The aim of monitoring is to screen the [...] Read more.

This study focuses on the determination of pesticide residues in drinking water in Slovakia using the LC-MS/MS method, covering a target list of approximately 90 pesticides selected according to the national drinking water risk assessment. The aim of monitoring is to screen the presence of pesticide substances in various water supply systems and to gain experience for setting higher-quality criteria for the control of drinking water. Drinking water samples were collected in 2023, 2024 and 2025 within the National Monitoring Project of the Presence of Pesticides in Public Water Supplies, including both Large-Supply Areas (>5000 inhabitants—2023) and Small-Supply Areas (500–5000 inhabitants—2024, 2025). A total of 211 samples were measured and evaluated in 2023, compared with 199 samples in 2024. This article presents the evaluation of results for 2023 and 2024, while data for 2025 will be assessed in 2026. The findings contribute to the improved surveillance and quality control of drinking water. Full article

(This article belongs to the Proceedings of The 1st International Online Conference on Separations)

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8 pages, 1935 KB

Open AccessProceeding Paper

Evaluation of Metal–Organic Framework-Based Adsorbents for Preconcentration of Pesticides from Water Samples

by Yumi Tenawa, Mai Furukawa, Ikki Tateishi, Hideyuki Katsumata and Satoshi Kaneco

Chem. Proc. 2025, 19(1), 2; https://doi.org/10.3390/chemproc2025019002 - 5 Jan 2026

Cited by 1

Metal-organic frameworks (MOFs) are porous crystalline materials composed of metal ions and organic ligands. By varying the combinations of metal centers and ligands, their structural properties, adsorption performance, and stability in aqueous environments can be tuned. Owing to these characteristics, MOFs have attracted [...] Read more.

Metal-organic frameworks (MOFs) are porous crystalline materials composed of metal ions and organic ligands. By varying the combinations of metal centers and ligands, their structural properties, adsorption performance, and stability in aqueous environments can be tuned. Owing to these characteristics, MOFs have attracted attention as promising materials for environmental analysis and separation technologies. In this study, several MOFs with different metal ions and ligands were synthesized and evaluated for their adsorption performance for bensulfuron-methyl, a sulfonylurea herbicide. Among the tested MOFs, MIL-53(Al) exhibited the highest recovery. The results indicate that adsorption performance depends on the combination of metal ions and organic ligands. Full article

(This article belongs to the Proceedings of The 1st International Online Conference on Separations)

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5 pages, 399 KB

Open AccessProceeding Paper

Synthesis and Structural Confirmation of a Novel 3,6-Dicarbonyl Derivative of 2-Chloropyrazine via Regioselective Dilithiation

by Priyabrata Roy

Chem. Proc. 2025, 18(1), 87; https://doi.org/10.3390/ecsoc-29-26696 - 22 Dec 2025

A novel 3,6-dicarbonyl-substituted derivative of 2-chloropyrazine has been synthesized for the first time via regioselective dilithiation using lithium 2,2,6,6-tetramethylpiperidide (LiTMP) and subsequent trapping with methyl benzoate. The structure was unambiguously confirmed through Sonogashira coupling and diagnostic NMR analysis, establishing selective substitution at both [...] Read more.

A novel 3,6-dicarbonyl-substituted derivative of 2-chloropyrazine has been synthesized for the first time via regioselective dilithiation using lithium 2,2,6,6-tetramethylpiperidide (LiTMP) and subsequent trapping with methyl benzoate. The structure was unambiguously confirmed through Sonogashira coupling and diagnostic NMR analysis, establishing selective substitution at both the 3- and 6-positions. This result demonstrates that symmetrical 3,6-functionalization of 2-chloropyrazine is feasible under mild conditions, overcoming long-standing limitations of multiple metalations in electron-deficient heterocycles and opening new pathways for the synthesis of polyfunctional pyrazine frameworks. Full article

(This article belongs to the Proceedings of The 29th International Electronic Conference on Synthetic Organic Chemistry)

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64 pages, 543 KB

Open AccessConference Report

Abstracts of the 3rd International Electronic Conference on Catalysis Sciences

by Evangelos Topakas and Keith Hohn

Chem. Proc. 2025, 17(1), 13; https://doi.org/10.3390/chemproc2025017013 - 18 Dec 2025

The 3rd International Electronic Conference on Catalysis Sciences (ECCS 2025) was held online from 23–25 May 2025 and was chaired by Prof [...] Full article

(This article belongs to the Proceedings of The 3rd International Electronic Conference on Catalysis Sciences)

27 pages, 312 KB

Open AccessConference Report

Abstracts of the 1st International Online Conference on Separations

by Grzegorz Boczkaj

Chem. Proc. 2025, 19(1), 1; https://doi.org/10.3390/chemproc2025019001 - 11 Dec 2025

The 1st International Online Conference on Separations (IOCS 2025), organized by MDPI during 15–17 October 2025, brings together researchers, professionals, and industry experts from around the world to explore the latest advancements in the dynamic field of separation science [...] Full article

(This article belongs to the Proceedings of The 1st International Online Conference on Separations)

1 pages, 128 KB

Open AccessEditorial

Statement of Peer Review

by Evangelos Topakas and Keith Hohn

Chem. Proc. 2025, 17(1), 12; https://doi.org/10.3390/chemproc2025017012 - 4 Dec 2025

In submitting conference proceedings to Chemistry Proceedings, the volume editors of the proceedings certify to the publisher that all papers published in this volume have been subjected to peer review administered by the volume editors [...] Full article

(This article belongs to the Proceedings of The 3rd International Electronic Conference on Catalysis Sciences)

9 pages, 1501 KB

Open AccessProceeding Paper

LIFE.PTML Model Development Targeting Calmodulin Pathway Proteins

by Maider Baltasar-Marchueta, Naia López, Sonia Arrasate, Matthew M. Montemore and Humberto González-Díaz

Chem. Proc. 2025, 18(1), 38; https://doi.org/10.3390/ecsoc-29-26890 - 3 Dec 2025

Developing predictive models for drug efficacy is challenged by the complexity and heterogeneity of bioassay data. Here, we present LIFE.PTML, which is a methodology integrating drug Lifecycle (L), Information Fusion (IF), Encoding (E), Perturbation Theory (PT), and Machine Learning (ML) to predict compound [...] Read more.

Developing predictive models for drug efficacy is challenged by the complexity and heterogeneity of bioassay data. Here, we present LIFE.PTML, which is a methodology integrating drug Lifecycle (L), Information Fusion (IF), Encoding (E), Perturbation Theory (PT), and Machine Learning (ML) to predict compound activity across diverse experimental conditions. Using a dataset of 3748 molecule–assay combinations targeting calmodulin (CaM) and related proteins, LIFE.PTML combines chemical and protein descriptors, quantifies experimental variability via perturbation operators, and trains non-linear classifiers, including XGBoost and Gradient Boosting. XGBoost achieved the best performance, with 88.9% test accuracy and an ROC AUC of 0.959, while feature importance analysis highlighted contributions from both drug- and protein-level descriptors. The results demonstrate that LIFE.PTML provides a robust, flexible, and interpretable framework for predictive chemoinformatics, facilitating the integration of multi-source data for drug discovery applications. Full article

(This article belongs to the Proceedings of The 29th International Electronic Conference on Synthetic Organic Chemistry)

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8 pages, 576 KB

Open AccessProceeding Paper

Therapeutic Potential of 1-Deazapurines as Alpha-Glucosidase Inhibitors: Molecular Docking and Pharmacokinetic Evaluation

by Faiza Boukli-Hacene, Hocine Allali, Sabri Ahmed Cherrak, Wassila Soufi and Said Ghalem

Chem. Proc. 2025, 18(1), 33; https://doi.org/10.3390/ecsoc-29-26911 - 1 Dec 2025

Type 2 diabetes mellitus remains a critical metabolic disorder requiring novel therapeutic approaches. In this work, a library of 1-deazapurine derivatives was evaluated as α-glucosidase inhibitors through molecular docking with MOE software. The three top-ranked ligands—Methyl 6-(2-hydroxybenzoyl)-3-(2-phenylethyl)imidazo[4,5-b] pyridine-5-carboxylate (–6.1247 kcal/mol), 5-(furan-2-yl)-3-(4-methoxybenzyl)-2-phenyl-7- (trifluoromethyl)imidazo[4,5-b]pyridine (–5.7030 [...] Read more.

Type 2 diabetes mellitus remains a critical metabolic disorder requiring novel therapeutic approaches. In this work, a library of 1-deazapurine derivatives was evaluated as α-glucosidase inhibitors through molecular docking with MOE software. The three top-ranked ligands—Methyl 6-(2-hydroxybenzoyl)-3-(2-phenylethyl)imidazo[4,5-b] pyridine-5-carboxylate (–6.1247 kcal/mol), 5-(furan-2-yl)-3-(4-methoxybenzyl)-2-phenyl-7- (trifluoromethyl)imidazo[4,5-b]pyridine (–5.7030 kcal/mol), and 3-[2-phenylethyl]-5-thio phen-2-yl-7-(trifluoromethyl)imidazo[4,5-b]pyridine (–5.5403 kcal/mol)—were further validated by molecular dynamics simulations. ADMET and drug-likeness predictions confirmed favourable pharmacokinetic behaviour, gastrointestinal absorption, and oral bioavailability. These findings highlight 1-deazapurines as promising scaffolds for developing new α-glucosidase inhibitors targeting type 2 diabetes. Full article

(This article belongs to the Proceedings of The 29th International Electronic Conference on Synthetic Organic Chemistry)

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8 pages, 1472 KB

Open AccessProceeding Paper

Chitosan-Based Biosorption: A Sustainable Approach for Heavy Metal Removal from Wastewater

by Imane Lansari, Khadidja Tizaoui and Belkacem Benguella

Chem. Proc. 2025, 18(1), 37; https://doi.org/10.3390/ecsoc-29-26919 - 28 Nov 2025

Cited by 2

This study investigates the application of natural chitosan as an efficient adsorbent for the removal of heavy metals from aqueous solutions. Experimental results showed that Mn(II), Co(II), and Ni(II) ions were effectively retained on the chitosan surface. Kinetic analysis revealed a preferential adsorption [...] Read more.

This study investigates the application of natural chitosan as an efficient adsorbent for the removal of heavy metals from aqueous solutions. Experimental results showed that Mn(II), Co(II), and Ni(II) ions were effectively retained on the chitosan surface. Kinetic analysis revealed a preferential adsorption order of Co(II) > Mn(II) > Ni(II), following a pseudo-second-order model with rapid kinetics. Equilibrium adsorption capacities were influenced by initial concentration, temperature, and pH. Thermodynamic analysis indicated that the adsorption process was exothermic and physical in nature. Overall, chitosan proved to be a promising and cost-effective adsorbent for water decontamination. Full article

(This article belongs to the Proceedings of The 29th International Electronic Conference on Synthetic Organic Chemistry)

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5 pages, 4586 KB

Open AccessProceeding Paper

Supramolecular Assemblies Driven by N-H…O and O-H…O Hydrogen Bonding Interactions: Experimental and Theoretical Investigation into the Supramolecular Architectures of Dihydropyrimidin-2(1H)-ones

by Sunshine Dominic Kurbah

Chem. Proc. 2025, 18(1), 28; https://doi.org/10.3390/ecsoc-29-26921 - 27 Nov 2025

In this paper, quantum chemical calculations at the DFT/6-311G (d,p) level of theory have been carried out to study the supramolecular structure of dihydropyrimidin-2(1H)-ones. Theoretical studies such as Hirshfeld surface analysis, MEPS (molecular electrostatic potential surface), and HOMO–LUMO calculation were also carried out [...] Read more.

In this paper, quantum chemical calculations at the DFT/6-311G (d,p) level of theory have been carried out to study the supramolecular structure of dihydropyrimidin-2(1H)-ones. Theoretical studies such as Hirshfeld surface analysis, MEPS (molecular electrostatic potential surface), and HOMO–LUMO calculation were also carried out to obtain the energy gap and to determine the kinetic stability and chemical reactivity. The crystal structure of dihydropyrimidin-2(1H)-ones shows the present of N-H…O and O-H…O hydrogen bonding interactions. The N-H…O bond lengths are 2.102 Å and 2.037 Å, respectively. The theoretical hydrogen bonding interactions were also compared with the available experimental data and found to be closely related. Full article

(This article belongs to the Proceedings of The 29th International Electronic Conference on Synthetic Organic Chemistry)

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5 pages, 753 KB

Open AccessProceeding Paper

Structure-Based Design and Synthesis of Novel Hybrid Molecules Derived from Anthranilic Acid as Drug Candidates

by Miglena Milusheva, Vera Gledacheva, Mihaela Stoyanova, Mina Todorova, Iliyana Stefanova and Stoyanka Atanasova Nikolova

Chem. Proc. 2025, 18(1), 19; https://doi.org/10.3390/ecsoc-29-26686 - 26 Nov 2025

Hybrid molecules, integrating multiple pharmacophores within a single scaffold, represent a modern strategy in drug discovery, offering improved selectivity and safety. Anthranilic acid is a versatile building block with diverse biological activities. In this work, we designed and synthesized novel anthranilic acid-based hybrids [...] Read more.

Hybrid molecules, integrating multiple pharmacophores within a single scaffold, represent a modern strategy in drug discovery, offering improved selectivity and safety. Anthranilic acid is a versatile building block with diverse biological activities. In this work, we designed and synthesized novel anthranilic acid-based hybrids with enhanced pharmacokinetic potential. The methods used include cheminformatics- guided library design, followed by amide bond formation between anthranilic acid derivatives and substituted 2-phenylethylamines. Purification and structural characterization were achieved via NMR, IR, and HRMS. The compounds exhibited favorable, predicted ADME/Tox profiles and synthetic accessibility. These results provide a foundation for further biological evaluation toward therapies for smooth muscle dysfunction and inflammation. Full article

(This article belongs to the Proceedings of The 29th International Electronic Conference on Synthetic Organic Chemistry)

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9 pages, 2582 KB

Open AccessProceeding Paper

In Silico Study of Obeticholic Acid Analogs as FXR Agonists

by Julio A. Seijas, Silvia Vázquez-Gómez, Francisco Meijide and M. Pilar Vázquez-Tato

Chem. Proc. 2025, 18(1), 137; https://doi.org/10.3390/ecsoc-29-27271 - 21 Nov 2025

Nuclear receptors are ligand-activated transcription factors that, in response to lipophilic hormones, vitamins, and dietary lipids, regulate numerous aspects of mammalian physiology. Bile acid receptors represent well-defined targets for the development of novel therapeutic approaches for metabolic and inflammatory diseases. The farnesoid X [...] Read more.

Nuclear receptors are ligand-activated transcription factors that, in response to lipophilic hormones, vitamins, and dietary lipids, regulate numerous aspects of mammalian physiology. Bile acid receptors represent well-defined targets for the development of novel therapeutic approaches for metabolic and inflammatory diseases. The farnesoid X receptor (FXR) was identified as an orphan steroid receptor-like nuclear receptor, and its activation is crucial in many physiological functions of the liver. A vital function of FXR is to influence the amount of bile acids in hepatocytes by reducing bile acid synthesis, stimulating the bile salt export pump, and inhibiting enterohepatic circulation, thereby protecting hepatocytes from toxic bile acid accumulation. FXR activation induces distinctive changes in circulating cholesterol in animal models and humans. We present an evaluation of the interaction of various obeticholic acid analogs and other bile salts by studying their binding energies and receptor-ligand interactions using AutoDock 4.2.6 software. The results open the possibility of using new alternatives by deriving structures at position 3 of the steroid nucleus. Full article

(This article belongs to the Proceedings of The 29th International Electronic Conference on Synthetic Organic Chemistry)

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9 pages, 2002 KB

Open AccessProceeding Paper

Structural Insights into Plasmepsin Inhibition by Phenolic Compounds from African Mistletoe (Tapinanthus globiferus) Parasitizing Vitex Doniana

by Momoh Hassanah, Jimoh Yusuf, Dauda Garba, Yau Jamilu, Mohammed Ibrahim Sule and Yahaya Mohammed Sani

Chem. Proc. 2025, 18(1), 114; https://doi.org/10.3390/ecsoc-29-27270 - 21 Nov 2025

The parasitic disease malaria necessitates novel drug targets due to increasing Plasmodium falciparum resistance. The purpose of this work was to investigate the antimalarial properties of four metabolites, namely catechin (Y10), catechin-3-gallate (Y11), 4-methoxyphenyl acryl aldehyde (Y12), and 4-hydroxy-3-methoxy acryl aldehyde (Y13), derived [...] Read more.

The parasitic disease malaria necessitates novel drug targets due to increasing Plasmodium falciparum resistance. The purpose of this work was to investigate the antimalarial properties of four metabolites, namely catechin (Y10), catechin-3-gallate (Y11), 4-methoxyphenyl acryl aldehyde (Y12), and 4-hydroxy-3-methoxy acryl aldehyde (Y13), derived from Tapinanthus globiferus, a traditional medicinal plant. Docking studies with important Plasmodium aspartic proteases, Plasmepsins I and II, showed good binding affinities, and Y11 showed the best binding affinity and a critical interaction with the catalytic dyad of Plm-II. The ADMET profile showed drug-likeness with low toxicity. These findings therefore position these metabolites, particularly Y11, as promising lead compounds for the development of antimalarial drugs. Full article

(This article belongs to the Proceedings of The 29th International Electronic Conference on Synthetic Organic Chemistry)

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7 pages, 3024 KB

Open AccessProceeding Paper

Tolerance of Hydroxyl and Ortho-Substituted Groups in the Hayashi–Miyaura Reaction: A Study on Nitroolefin Substrates

by Tomáš Hlavatý, Pavel Drabina, Jiří Váňa and Jan Bartáček

Chem. Proc. 2025, 18(1), 111; https://doi.org/10.3390/ecsoc-29-27268 - 21 Nov 2025

This study researches the underexplored potential of the palladium-catalyzed Hayashi–Miyaura reaction in asymmetric synthesis, focusing on the preparation of novel derivatives of 2,2-diaryl-1-nitroethanes. These compounds are of interest as potential building blocks in medicinal and materials chemistry, yet they remain largely unexamined in [...] Read more.

This study researches the underexplored potential of the palladium-catalyzed Hayashi–Miyaura reaction in asymmetric synthesis, focusing on the preparation of novel derivatives of 2,2-diaryl-1-nitroethanes. These compounds are of interest as potential building blocks in medicinal and materials chemistry, yet they remain largely unexamined in enantioselective transformations. The study specifically targets three challenging substrates: 1,3-dimethoxy-5-(2-nitro-1-(o-tolyl)ethyl)benzene, 2-(2-nitro-1-phenylethyl)phenol, and 4-(2-nitro-1-phenylethyl)phenol. These molecules were selected to probe the reaction’s tolerance toward ortho-substitution and free hydroxyl groups—features known to complicate catalytic processes. Full article

(This article belongs to the Proceedings of The 29th International Electronic Conference on Synthetic Organic Chemistry)

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9 pages, 1743 KB

Open AccessProceeding Paper

Design, Synthesis, Spectral Characterization, and Antidepressant Evaluation of 2,4-Diphenylquinoline Derivatives

by Abubakar Sadiq Yakubu, Asmau Nasir Hamza, Idris Yunusa Abdullahi, Maryam Abdullahi, Idris Abdullahi, Rabiu Bako and Idris Umar

Chem. Proc. 2025, 18(1), 142; https://doi.org/10.3390/ecsoc-29-27236 - 20 Nov 2025

Depression is a debilitating neuropsychiatric disorder and a leading cause of disability worldwide, with current therapeutic options often limited by delayed onset of action, inadequate efficacy, and undesirable side effects. The quinoline scaffold, a privileged structure in medicinal chemistry, has been reported to [...] Read more.

Depression is a debilitating neuropsychiatric disorder and a leading cause of disability worldwide, with current therapeutic options often limited by delayed onset of action, inadequate efficacy, and undesirable side effects. The quinoline scaffold, a privileged structure in medicinal chemistry, has been reported to possess a wide spectrum of pharmacological properties, including central nervous system (CNS) modulation. In this study, two novel 2,4-diphenylquinoline derivatives—CMPD1 [2-(4-methoxyphenyl)-4-phenylquinoline] and CMPD2 [2-(2,4-dichlorophenyl)-4-phenylquinoline]—were rationally designed based on structure–activity relationship (SAR) insights and synthesized via the Friedländer condensation of appropriately substituted anilines with carbonyl precursors. Purification was achieved through recrystallization, and structural confirmation was performed using Fourier-transform infrared (FT-IR) spectroscopy, proton nuclear magnetic resonance (NMR), and carbon-13 NMR spectroscopy, confirming the expected chemical shifts and diagnostic signals for quinoline derivatives. The pharmacological activity was evaluated using murine models for antidepressant screening: the Forced Swim Test (FST) and Tail Suspension Test (TST). Both compounds produced statistically significant reductions in immobility time compared to the control group (p < 0.05), with CMPD2 showing slightly enhanced activity. The results suggest that electron-donating and electron-withdrawing substituents influence antidepressant potency, potentially through modulation of CNS receptor binding. These findings validate 2,4-diphenylquinoline derivatives as promising antidepressant leads, meriting further optimization, in vivo pharmacokinetic studies, and mechanistic investigations to establish their clinical translation potential. Full article

(This article belongs to the Proceedings of The 29th International Electronic Conference on Synthetic Organic Chemistry)

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4 pages, 642 KB

Open AccessProceeding Paper

The Influence of Cucurbit[7]uril on the Photophysical Properties of Encapsulated Styryl Dye

by Olga P. Kolesnikova, Denis A. Ivanov, Igor V. Kryukov and Nikolai Kh. Petrov

Chem. Proc. 2025, 18(1), 120; https://doi.org/10.3390/ecsoc-29-26963 - 14 Nov 2025

The interaction between the styryl dye 4-{(E)-2-[4-(dimethylamino)phenyl]vinyl}-1-methylpyridinium iodide (DASPI) and cucurbit[7]uril (CB[7]) in aqueous solution was studied by optical spectroscopy methods. Due to negatively charged portals, cucurbit[7]urils can form complexes with cationic styryl dye. This complexation alters the photophysical properties of the dye, [...] Read more.

The interaction between the styryl dye 4-{(E)-2-[4-(dimethylamino)phenyl]vinyl}-1-methylpyridinium iodide (DASPI) and cucurbit[7]uril (CB[7]) in aqueous solution was studied by optical spectroscopy methods. Due to negatively charged portals, cucurbit[7]urils can form complexes with cationic styryl dye. This complexation alters the photophysical properties of the dye, such as absorption and fluorescence. It was previously found that the formation of 1:2 inclusion complexes leads to a shift in the absorption band. Such changes were previously attributed to protonation of the dye. To explain this effect, we hypothesize that it arises from the influence of the electrostatic field generated by the negatively charged portals of cucurbit[7]uril on the conjugated π-electron system of the dye. Full article

(This article belongs to the Proceedings of The 29th International Electronic Conference on Synthetic Organic Chemistry)

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