[EN] HYDROGENATION AND DEHYDROGENATION CATALYST, AND METHODS OF MAKING AND USING THE SAME<br/>[FR] CATALYSEUR D'HYDROGÉNATION ET DE DÉSHYDROGÉNATION, ET SES PROCÉDÉS DE FABRICATION ET D'UTILISATION
申请人:GOUSSEV DMITRI
公开号:WO2013023307A1
公开(公告)日:2013-02-21
The present application discloses complexes useful as catalysts for organic chemical synthesis including hydrogenation and dehydrogenation of unsaturated compounds or dehydrogenation of substrates. The range of hydrogenation substrate compounds includes esters, lactones, oils and fats, resulting in alcohols, diols, and triols as reaction products. The catalysts of current application can be used to catalyze a hydrogenation reaction under solvent free conditions. The present catalysts also allow the hydrogenation to proceed without added base, and it can be used in place of the conventional reduction methods employing hydrides of the main-group elements. Furthermore, the catalysts of the present application can catalyze a dehydrogenation reaction under homogenous and/or acceptorless conditions. As such, the catalysts provided herein can be useful in substantially reducing cost and improving the environmental profile of manufacturing processes for variety of chemicals.
[EN] COMPLEX CATALYSTS BASED ON AMINO-PHOSPHINE LIGANDS FOR HYDROGENATION AND DEHYDROGENATION PROCESSES<br/>[FR] CATALYSEURS COMPLEXES À BASE DE LIGANDS DE TYPE AMINOPHOSPHINE POUR PROCESSUS D'HYDROGÉNATION ET DE DÉSHYDROGÉNATION
申请人:GOUSSEV DMITRI
公开号:WO2014139030A1
公开(公告)日:2014-09-18
The present application discloses novel PWNN and PWNWP metal catalysts for organic chemical syntheses including hydrogenation (reduction) of unsaturated compounds or dehydrogenation of substrates. The range of hydrogenation substrate compounds includes esters, lactones, enals, enones, enolates, oils and fats, resulting in alcohols, enols, diols, and triols as reaction products. The catalysts of current application can be used to catalyze a hydrogenation reaction under solvent free conditions. The present catalysts also allow the hydrogenation to proceed without added base, and it can be used in place of the conventional reduction methods employing hydrides of the main-group elements. Furthermore, the catalysts of the present application can catalyze a dehydrogenation reaction under homogenous and/or acceptorless conditions. As such, the catalysts provided herein can be useful in substantially reducing cost and improving the environmental profile of manufacturing processes for a variety of chemicals.
Highly Rapid and Direct Synthesis of Diaryl Sulfoxides
作者:B. P. Bandgar、S. N. Kinkar、V. T. Kamble、S. V. Bettigeri
DOI:10.1055/s-2003-41461
日期:——
Aromatic compounds react smoothly with thionyl chloride in the presence of 10 mol% of water at ambient temperature to afford the corresponding symmetrical diaryl sulfoxides in good to excellent yields with high regioselectivity.
Dioxygenase-catalysed oxidation of monosubstituted thiophenes: sulfoxidation versus dihydrodiol formation
作者:Derek R. Boyd、Narain D. Sharma、Nimal Gunaratne、Simon A. Haughey、Martina A. Kennedy、John F. Malone、Christopher C. R. Allen、Howard Dalton
DOI:10.1039/b300867n
日期:2003.3.13
unstable thiophene oxide metabolites, 6A-6G, 6K-6N, spontaneously dimerised yielding the corresponding racemic disulfoxide cycloadducts 7A-7G, 7K-7N. Dimeric or crossed [4 + 2] cycloaddition products, derived from the thiophene oxide intermediates 6A and 6D or 6B and 6D, were found when mixtures of thiophene substrates 1A and 1D or 1B and 1D were biotransformed. The thiophene sulfoxide metabolite 6B was
A simple and efficient protocol was developed for the preparation of challenging α-aryl primary amides. This metal-free coupling process was triggered by TfOH-promoted electrophilicactivation of α-silyl nitrile to generate keteniminium ion species, followed by reaction with aryl sulfoxide through [3,3]-sigmatrophic rearrangement to provide the target product. To the best of our knowledge, α-silyl