摘要
An efficient synthesis of 3-(diarylallylidene)oxindoles from 3-(1 H-indol-3-yl)-1,1-diarylpropan-1-ol under metal-free conditions is described.NBS serves as a critical medium leading to a facile oxygenmigration in the transformation.The protocol has advantages of high efficiency,simple opreation,mild reaction conditions,good atom-economy,wide substrate scope and good yields of products.A detailed mechanism is proposed after careful investigation.
基金
the National Natural Science Foundation of China(Nos.21772138 and 21672157)
PAPD,the Postgraduate Research&Practice Innovation Program of Jiangsu Province(No.KYCX19_1899)
the Project of Scientific and Technologic Infrastructute of Suzhou(No.SZS201708)
State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials for financial support。
