An Upstream By-product from Ester Activation via NHC-Catalysis Catalyzes Downstream Sulfonyl Migration Reaction
作者:Runfeng Han、Liwenze He、Lin Liu、Xingang Xie、Xuegong She
DOI:10.1002/asia.201500959
日期:2016.1
A sequential reaction combining N‐heterocyclic carbene (NHC) and N‐hydroxyphthalimide (NHPI) catalysis allowed for the upstream by‐product NHPI, which was generated in the NHC‐catalyzed cycloaddition reaction, to act as the catalyst for a downstream nitrogen‐to‐carbon sulfonylmigrationreaction. Enantiomeric excess of the major product in the cycloaddition reaction remained intact in the follow‐up