Divergent synthesis of 1,5-benzodiazepines and benzimidazoles via a BiCl 3 -catalyzed one-pot condensation–cyclization process

Jiaqi Sun,Shan Li, Meiqing Meng, Qiumei Xue, Xuliang Chen, Qiong Qin,Xiaofeng Liu, Qi Liu

Chemistry of Heterocyclic Compounds（2023）

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摘要

Catalyzed by BiCl 3 , aromatic o -diamines reacted with ketones efficiently to produce 1,5-benzodiazepines in good to excellent yields by condensation–cyclization reaction. Using aldehydes as substrates, mono- or disubstituted benzimidazoles were obtained as the final products. All reactions were carried out under mild reaction conditions and showed good functional group compatibility.

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关键词

aldehyde,benzimidazoles,1,5-benzodiazepines,bismuth(III) chloride,ketone,condensation–cyclization

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