化学
位阻效应
硝化作用
区域选择性
亚硝酸盐
光化学
联轴节(管道)
硝基
药物化学
有机化学
硝酸盐
催化作用
机械工程
烷基
工程类
作者
Prabhat Sarkar,Soumitra Rana,Debashis Jana,Subham Mandal,Chhanda Mukhopadhyay
标识
DOI:10.1002/adsc.202301159
摘要
tert‐ butylnitrite (TBN) promoted visible‐light‐induced one‐pot C‐N cross coupling reaction of 3‐alkylidene‐2‐oxindoles with benzene‐1,2‐diamine has been explored. Simultaneously, the indoline motif of 3‐alkylidene‐2‐oxindoles as well as 3‐ylidene oxindoles are regioselectively nitrated at C‐6 position by in‐situ formed NO2 radical. (E)‐3‐(2‐(aryl)‐2‐oxoethylidene)oxindole and (E)‐3‐ylidene oxindole, produce distinct nitrated diastereomeric coupling products, a phenomenon influenced by the steric bulk of the functional group. The experimental findings suggest the potential involvement of a radical pathway in this reaction.
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