USE OF COMPOSITIONS OBTAINED BY CALCINING PARTICULAR METAL-ACCUMULATING PLANTS FOR IMPLEMENTING CATALYTICAL REACTIONS
申请人:CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
公开号:US20150376224A1
公开(公告)日:2015-12-31
The use of metal-accumulating plants for implementing chemical reactions especially catalytical reactions.
金属积累植物用于实现化学反应,特别是催化反应的使用。
Multisite Solid Catalyst for Cascade Reactions: The Direct Synthesis of Benzodiazepines from Nitro Compounds
作者:Maria J. Climent、Avelino Corma、Sara Iborra、Laura L. Santos
DOI:10.1002/chem.200900492
日期:2009.9.7
Substituted 1,5‐benzodiazepines are selectively synthesized in one pot from substituted nitroaromatics and ketones. The reaction is performed in the presence of hydrogen and in the absence of solvent by using a bifunctional solidcatalyst with a chemoselective hydrogenation functional group capable of reducing the nitro group to a diamino group and an acid functional group, which catalyzes the cyclocondensation
Synthesis of 2-Substituted Benzimidazoles and 1,5-Disubstituted Benzodiazepines on Alumina and Zirconia Catalysts
作者:M. REKHA、A. HAMZA、B.R. VENUGOPAL、N. NAGARAJU
DOI:10.1016/s1872-2067(11)60338-0
日期:2012.2
In this study, alumina, zirconia, manganese oxide/alumina, and manganese oxide/zirconia have been investigated for their catalytic activity in the condensation reaction between o-phenylenediamine and an aldehyde or a ketone to synthesise 2-substituted benzimidazoles and 1,5-disubstituted benzodiazepines respectively. Surface area, surface acidity, and morphology of the catalysts have been analysed
Benzodiazepines and their derivatives are a very important class of nitrogen-containing heterocyclic compounds with biological activity that are widely used in medicine. In this study, we demonstrated synthesis of 1,5-benzodiazepines from 1,2-phenylenediamine and ketones (acetone, cyclohexanone, acetophenone, methyl ethyl ketone) in the presence of isostructural porous metal-benzenetricarboxylates
Synthesis of 1-H-1,5-benzodiazepines derivatives using SiO2/ZnCl2
作者:Raquel G. Jacob、Cátia S. Radatz、Mariele B. Rodrigues、Diego Alves、Gelson Perin、Eder J. Lenardão、Lucielli Savegnago
DOI:10.1002/hc.20674
日期:——
A general and easy method for the synthesis of several 1-H-1,5-benzodiazepines using SiO2/ZnCl2 under solvent-free conditions is described. This efficient and improved method furnishes selectively and in good yields the corresponding 1-H-1,5-benzodiazepines derivatives starting from o-phenylenediamine and cyclic or acyclicketones. The catalytic system was reused up four times, and the use of focused