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Authors = Ahmad. Abu-Obaid

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5 pages, 506 KB  
Short Note
5,5-Dimethyl-2,2-di(pyridin-2-yl)hexahydropyrimidine
by Ahmad. Abu-Obaid, Ahmad I. Asadi, Afaf. Alruwaili, Heba. Atieh, Shoqour Khlaif, Taibi Ben Hadda, Smaail Radi, Belkheir Hammouti and Ismail Warad
Molbank 2015, 2015(1), M838; https://doi.org/10.3390/M838 - 24 Dec 2014
Cited by 1 | Viewed by 5055
Abstract
Novel 5,5-dimethyl-2,2-di(pyridin-2-yl)hexahydropyrimidine was synthesized in good yield by a one-pot condensation reaction of 2,2-dimethylpropane-1,3-diamine with di(pyridin-2-yl)methanoneusing dichloromethane as solvent at room temperature. The structure of the synthesized compound was assigned on the basis of its elemental analysis, UV-visible, 1H-NMR, 13C-NMR, IR, [...] Read more.
Novel 5,5-dimethyl-2,2-di(pyridin-2-yl)hexahydropyrimidine was synthesized in good yield by a one-pot condensation reaction of 2,2-dimethylpropane-1,3-diamine with di(pyridin-2-yl)methanoneusing dichloromethane as solvent at room temperature. The structure of the synthesized compound was assigned on the basis of its elemental analysis, UV-visible, 1H-NMR, 13C-NMR, IR, and mass spectral data. Full article
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16 pages, 990 KB  
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Design, Synthesis, Characterization of Novel Ruthenium(II) Catalysts: Highly Efficient and Selective Hydrogenation of Cinnamaldehyde to (E)-3-Phenylprop-2-en-1-ol
by Hany W. Darwish, Assem Barakat, Ayman Nafady, Mohammed Suleiman, Mousa Al-Noaimi, Belkheir Hammouti, Smaail Radi, Taibi Ben Hadda, Ahmad Abu-Obaid, Mohammad S. Mubarak and Ismail Warad
Molecules 2014, 19(5), 5965-5980; https://doi.org/10.3390/molecules19055965 - 9 May 2014
Cited by 3 | Viewed by 8906
Abstract
In this contribution, two novel supported and non-supported ruthenium(II) complexes of type [RuCl2(dppme)(NN)] where [dppme is H2C=C(CH2PPh2)2 and NN is N1-(3-(trimethoxysilyl)propyl)ethane-1,2-diamine] were prepared. The NN co-ligand caused release of one of the dppme ligands [...] Read more.
In this contribution, two novel supported and non-supported ruthenium(II) complexes of type [RuCl2(dppme)(NN)] where [dppme is H2C=C(CH2PPh2)2 and NN is N1-(3-(trimethoxysilyl)propyl)ethane-1,2-diamine] were prepared. The NN co-ligand caused release of one of the dppme ligands from [RuCl2(dppme)2] precursor to yield complex 1. The process of substitution of dppme by NN was monitored by 31P{1H}-NMR. Taking advantage of the presence of trimethoxysilane group in the backbone of complex 1, polysiloxane xerogel counterpart, X1, was prepared via sol-gel immobilization using tetraethoxysilane as cross-linker. Both complexes 1 and X1 have been characterized via elemental analysis, CV and a number of spectroscopic techniques including FT-IR, 1H-, 13C-, and 31P-NMR, and mass spectrometry. Importantly, carbonyl selective hydrogenation was successfully accomplished under mild conditions using complex 1 as a homogenous catalyst and X1 as a heterogeneous catalyst, respectively. Full article
(This article belongs to the Section Organic Chemistry)
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