本文描述了一种新型的稠合三环重氮并庚并[3,2,1- ij ]喹啉和取代的吡啶并[1,2,3- de ]喹喔啉的便捷有效合成方法。邻苯二胺仅需几步合成即可在三环核中转化,生成乙基2,8-二氧代-1,2,3,4-四氢-8 H [1,4]二氮杂[3,2,1 - IJ ]喹啉-7-羧酸乙酯,8-氧代-1,2,3,4-四氢-8- ħ - [1,4]二氮杂并[3,2,1- IJ ]喹啉-7-甲酸甲酯和2- ,7-二氧代-2-3,2-二氢-1 H,7 H-吡啶基[1,2,3- de ]喹喔啉-6-羧酸盐。该方法经济且易于执行。
Gold(I)-Catalyzed Synthesis of 1,5-Benzodiazepines Directly from o-Phenylenediamines and Alkynes
摘要:
A unique gold(I)-catalyzed highly atom-economic synthesis of 1,5-benzodiazepines directly from o-phenylenediamines and alkynes has been achieved for the first time.
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