Synthesis of CF3-containing Spiro-Epoxyoxindoles Via the Corey-Chaykovsky Reaction of N-alkyl Isatins with Ph2S+CH2CF3OTf-

Bin Cheng,Bing Zu,Yuntong Li,Cheng Tao,Chen Zhang,Renqi Wang,Yun Li,Hongbin Zhai

Organic & biomolecular chemistry（2018）

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摘要

CF3-containing spiro-epoxyoxindoles were successfully prepared via the Corey-Chaykovsky reaction of N-alkyl isatins with the ylide generated from Ph2S+CH2CF3OTf- with almost exclusive diastereoselectivity. Further derivatizations of these spiro-epoxyoxindoles were explored via a photochemical reaction or Lewis acid-promoted allylation.

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