Rh(III) Catalyzed Redox-Neutral C–H Activation/[5 + 2] Annulation of Aroyl Hydrazides and Sulfoxonium Ylides: Synthesis of Benzodiazepinones
作者:Pothapragada S. K. Prabhakar Ganesh、Perumal Muthuraja、Purushothaman Gopinath
DOI:10.1021/acs.orglett.3c03495
日期:2023.11.24
We herein report the Rh(III) catalyzed redox-neutral C–Hactivation/[5 + 2] annulation of aroyl hydrazides with sulfoxonium ylides as safe carbene precursors. The reaction shows excellent functional group tolerance, broad substrate scope, and scalability. We demonstrated the synthetic utility of the protocol via the synthesis of various diazepam drug analogues, late-stage functionalization of probenecid
4-Aryl-1-hydrazino-5H-2,3-benzodiazepine and 1-aryl-4-hydrazino-5H-2,3-benzodiazepine in the synthesis of condensed [1,2]diazepines
作者:O. I. Kharaneko、V. Yu. Popov、S. L. Bogza
DOI:10.1007/s10593-013-1249-6
日期:2013.5
A method has been developed for the cyclization of 4-aryl-1-hydrazino-5H-2,3-benzodiazepine and 1-aryl-4-hydrazino-5H-2,3-benzodiazepine into 3-R-6-aryl-7H-[1,2,4]triazolo[3,4-a]- and 3-R-6-aryl-7H-[1,2,4]triazolo[4,3-c]benzodiazepine derivatives with various substituents in the triazole ring.
2,3-Benzodiazepine-1-thione in the synthesis of substituted and hetero-annelated 2,3-benzodiazepines
作者:K. M. Khabarov、O. I. Kharaneko、S. L. Bogza
DOI:10.1007/s10593-009-0280-0
日期:2009.4
A series of S-substituted and 1,2-annelated derivatives of 2,3-benzodiazepine has been obtained on the basis of 2,3-benzodiazepine-1-thione.
FLAMMANG M.; WERMUTH C.-G., C. R. ACAD. SCI., 1980, C290, NO 18, 361-363