(1H-imidazol-1-ylmethyl) substituted benzimidazole derivatives and use
申请人:Janssen Pharmaceutica N.V.
公开号:US04859684A1
公开(公告)日:1989-08-22
Novel (1H-imidazol-1-ylmethyl) substituted benzimidazole derivatives, compositions containing the same, and methods of treating androgen dependent disorders in mammals.
Visible-Light-Photocatalyzed Metal-Free C-H Heteroarylation of Heteroarenes at Room Temperature: A Sustainable Synthesis of Biheteroaryls
作者:Pintu Maity、Debasish Kundu、Brindaban C. Ranu
DOI:10.1002/ejoc.201500006
日期:2015.3
An efficient C–Hheteroarylation of heteroarenes is achieved through visible-light photoredox-catalyzed diazotization of heteroarylamines in situ by tBuONO at roomtemperature. A library of functionalized biheteroaryls is obtained by using this protocol. The reaction avoids the use of transition-metal catalysts, additives, and acidic reaction medium.
The replacement of fossil resources with biomass resources in the construction of N-heterocycles is rapidly attracting research interest. Herein, we report palladium-catalyzed selective hydrogenative coupling of nitroarenes and phenols based on a transfer hydrogenation strategy, allowing straightforward access to spirocyclic pyrrolo- and indolo-fused quinoxalines, a class of compounds found in numerous
Certain N-substituted benzimidazoles, which are potent antiviral agents, are disclosed. The compounds are prepared by reacting the corresponding keto derivative with an alkylating agent or by cyclizing the corresponding o-phenylenediamine. Pharmaceutical formulations containing such compounds and a method of treating viral infections are provided.