Abstract
A facile TfOH-catalyzed oxidative cyclization of allyl compounds and isocyanide has been developed with the assistance of DDQ,where isocyanide is used as the crucial"N"and"CN"sources.Highly function-alized 2-cyanopyrroles are constructed efficiently through a new formal[3+2]mode,demonstrating di-verse reactivity and synthetic utility in organic chemistry.2-Cyanopyrrole is converted into a nucleobase analogue of Remdesivir and 5H-pyrrolo[2,1-a]isoindole through a three-step or a two-step sequence,re-spectively.This protocol features broad substrate scope,operational simplicity and good functional group tolerance.
基金项目
国家自然科学基金(22171178)
国家自然科学基金(21871174)
国家自然科学基金(22071143)
上海市教委科研创新计划(2019-01-07-00-09-E00008)