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Molbank, Volume 2011, Issue 1 (March 2011) – 12 articles

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147 KiB  
Short Note
1,1,2,2-Tetrakis[(benzoylamino)methyl]hydrazine
by Jasmina Tanatarec, Bozhana Mikhova and Emil Popovski
Molbank 2011, 2011(1), M722; https://doi.org/10.3390/M722 - 23 Mar 2011
Cited by 1 | Viewed by 4551
Abstract
We report herein the synthesis of 1,1,2,2-tetrakis[(benzoylamino)methyl]-hydrazine from (benzamidomethyl)triethylammonium chloride and hydrazine monohydrate in the presence of triethylamine in ethanol/aqueous media. The structure of the newly synthesized compound was characterized on the basis of 1H-NMR, 13C-NMR, IR and mass spectral data. Full article
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Scheme 1

126 KiB  
Short Note
(S)-(-)-Limonene Derivatives Containing (1H-1,2,3-Triazol-4-yl)methyl 4-Bromobenzoate
by Guillermo Valdomir and Danilo Davyt
Molbank 2011, 2011(1), M721; https://doi.org/10.3390/M721 - 23 Mar 2011
Cited by 1 | Viewed by 5369
Abstract
The synthesis of (S)-(-)-limonene derivatives containing (1H-1,2,3-triazol-4-yl)methyl 4-bromobenzoate were obtained by epoxidation, azidolysis and Huisgen’s 1,3-dipolar cycloaddition. Two products were isolated and characterized by FT-IR, 1H NMR, 13C NMR, ESI-MS and optical rotation. Full article
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Scheme 1

97 KiB  
Short Note
2-[(3,5-Dimethyl-1-phenyl-1H-pyrazol-4-yl)methylene]indane-1,3-dione
by Abdullah M. Asiri and Salman A. Khan
Molbank 2011, 2011(1), M720; https://doi.org/10.3390/M720 - 28 Feb 2011
Viewed by 4897
Abstract
The title compound 2-[(3,5-dimethyl-1-phenyl-1H-pyrazol-4-yl)methylene]-indane-1,3-dione (3) was synthesized in high yield by reaction of 3,5-dimethyl-1-phenyl-pyrazole-4-carbaldehyde and indane-1,3-dione in ethanol in the presence of pyridine. The structure of this new compound was confirmed by elemental analysis, IR, 1H NMR, 13 [...] Read more.
The title compound 2-[(3,5-dimethyl-1-phenyl-1H-pyrazol-4-yl)methylene]-indane-1,3-dione (3) was synthesized in high yield by reaction of 3,5-dimethyl-1-phenyl-pyrazole-4-carbaldehyde and indane-1,3-dione in ethanol in the presence of pyridine. The structure of this new compound was confirmed by elemental analysis, IR, 1H NMR, 13C NMR and GC-MS spectral analysis. Full article
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139 KiB  
Short Note
trans-2-Phenyl-4-thiophenoxy-3,4-dihydro-2H-1-benzothiopyran
by Asok K. Mallik, Tapas K. Mandal, Rammohan Pal and Amarendra Patra
Molbank 2011, 2011(1), M719; https://doi.org/10.3390/M719 - 18 Feb 2011
Cited by 2 | Viewed by 4306
Abstract
Iodine-catalyzed cyclocondensation of cinnamaldehyde and thiophenol yields rapidly trans-2-phenyl-4-thiophenoxy-3,4-dihydro-2H-1-benzothiopyran in excellent yield with very high diastereoselectivity. Full article
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89 KiB  
Short Note
6-Methyl-2-nitro-1-phenyl-hept-4-en-3-ol
by Josef M. Herrmann and Burkhard König
Molbank 2011, 2011(1), M718; https://doi.org/10.3390/M718 - 16 Feb 2011
Viewed by 4763
Abstract
In this short note, we report the synthesis of 6-methyl-2-nitro-1-phenyl-hept-4-en-3-ol by a LiAlH4 catalyzed nitroaldol reaction for carbon-carbon bond formation. The title compound was characterized by 1H-NMR, 13C-NMR, MS, IR and elemental analysis. Full article
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131 KiB  
Short Note
7-Phenyl-3,4,8,9-tetrahydro-2H-pyridazino[1,6-a][1,3,5]triazin-2-imine
by Anees A. Siddiqui, Ravinesh Mishra, M. Shaharyar, Asif Husain, Mohd. Rashid, Manoj Pal and Hemmige S. Yathirajan
Molbank 2011, 2011(1), M717; https://doi.org/10.3390/M717 - 11 Feb 2011
Cited by 3 | Viewed by 4507
Abstract
7-Phenyl-3,4,8,9-tetrahydro-2H-pyridazino[1,6-a][1,3,5]triazin-2-imine was synthesized by a sequence of reactions starting from 6-phenyl-4,5-dihydropyridazin-3(2H)-one 1. The structure of the title compound 3 was established on the basis of IR, 1H-NMR, 13C-NMR and mass spectral data. Full article
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108 KiB  
Short Note
Copper 5,10,15,20-Tetra(N-ethyl-3-carbazolyl) Porphyrin
by Cynthia P. Tidwell, L. Dalila Fondren and David E. Nikles
Molbank 2011, 2011(1), M716; https://doi.org/10.3390/M716 - 28 Jan 2011
Viewed by 4774
Abstract
The copper complex of 5,10,15,20-Tetra(N-ethyl-3-carbazolyl) porphyrin was synthesized and characterized by electronic absorption spectrophotometry and cyclic voltammetry. The spectral data were in agreement with the proposed structure. The copper complex exhibited a shift in the Soret band in comparison to the [...] Read more.
The copper complex of 5,10,15,20-Tetra(N-ethyl-3-carbazolyl) porphyrin was synthesized and characterized by electronic absorption spectrophotometry and cyclic voltammetry. The spectral data were in agreement with the proposed structure. The copper complex exhibited a shift in the Soret band in comparison to the non-metallated porphyrin and the extinction coefficient for the Soret band was on the order of 105 cm−1M−1. Trends observed in the oxidation and reduction potentials were consistent with the nature of the porphyrin. That is, the electron donating group in 5,10,15,20-tetra(N-ethyl-3-carbazolyl) porphyrin enhances oxidation and inhibits reduction. Full article
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68 KiB  
Short Note
(Benzoylamino)methyl 4-Acetyloxybenzoate
by Emil Popovski and Kristina Mladenovska
Molbank 2011, 2011(1), M715; https://doi.org/10.3390/M715 - 26 Jan 2011
Cited by 1 | Viewed by 3910
Abstract
(Benzoylamino)methyl 4-acetyloxybenzoate (3) was obtained in a reaction of benzamidomethylation of 4-acetyloxybenzoic acid (2) with (benzamidomethyl)­triethyl­ammonium chloride (1). Full article
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99 KiB  
Short Note
[5-(1,3-Diphenyl-1H-pyrazol-4-yl)-3-phenyl-4,5-dihydropyrazol-1-yl](pyridin-4-yl)methanone
by Darpan Kaushik, Upasana Nagpal, Tarawanti Verma and Kapish Madan
Molbank 2011, 2011(1), M714; https://doi.org/10.3390/M714 - 11 Jan 2011
Viewed by 4570
Abstract
A novel pyrazoline derivative 2 was synthesized by reaction of an α,β-unsaturated ketone 1 with isonicotinic acid hydrazide (INH) in glacial acetic acid. The structure of the title compound 2 was established on basis of IR, 1H-NMR, 13C-NMR and mass spectral data. Full article
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86 KiB  
Short Note
(2E)-1-(2,5-Dimethyl-3-thienyl)-3-(4-nitrophenyl)propenone
by Abdullah M. Asiri, Salman A. Khan and Khalid A. Khan
Molbank 2011, 2011(1), M713; https://doi.org/10.3390/M713 - 7 Jan 2011
Cited by 1 | Viewed by 4888
Abstract
The title compound, (2E)-1-(2,5-dimethyl-3-thienyl)3-(4-nitrophenyl)propenone (3) was synthesized in high yield by reaction of 3-acetyl-2,5-dimethythiophene and 4-nitrobenzaldehyde in the presence of sodium hydroxide. The structure of the compound was fully characterized by IR, 1H NMR, 13C NMR, GC-MS spectral analysis and elemental analysis. Full article
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72 KiB  
Short Note
Methyl 4-[(Benzoylamino)methoxy]benzoate
by Emil Popovski, Kristina Mladenovska and Ana Poceva Panovska
Molbank 2011, 2011(1), M712; https://doi.org/10.3390/M712 - 24 Dec 2010
Cited by 1 | Viewed by 4516
Abstract
Methylparabene (2) was simply benzamidomethylated with (benzamidomethyl)­triethylammonium chloride (1) in aqueous medium to afford methyl 4-(benzamido­methoxy)benzoate (3) in high yield. The title compound was characterized by elemental analysis, FT-IR, 1H-NMR and 13C-NMR spectroscopy. Full article
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75 KiB  
Short Note
(Benzoylamino)methyl 4-[(Benzoylamino)methoxy]benzoate
by Emil Popovski, Kristina Mladenovska and Ana Poceva Panovska
Molbank 2011, 2011(1), M711; https://doi.org/10.3390/M711 - 24 Dec 2010
Cited by 1 | Viewed by 4773
Abstract
In this note, two procedures for the synthesis of (benzoylamino)methyl 4-[(benzoylamino)­methoxy]benzoate (3) are presented. The first procedure is carried out in dioxane/water using benzoylaminomethyl-4-hydroxybenzoate, while the second one employs a suspension of 4-hydroxy­benzoic acid in dioxane. In both procedures, benzamidomethyl triethylammonium [...] Read more.
In this note, two procedures for the synthesis of (benzoylamino)methyl 4-[(benzoylamino)­methoxy]benzoate (3) are presented. The first procedure is carried out in dioxane/water using benzoylaminomethyl-4-hydroxybenzoate, while the second one employs a suspension of 4-hydroxy­benzoic acid in dioxane. In both procedures, benzamidomethyl triethylammonium chloride is used for the benzamidomethylation reaction. Full article
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