MeOH‐Mediated Efficient Reduction with N‐Heterocyclic Carbene Boranes Towards the Synthesis of Cyclic Sulfamates and Sulfonamides

Abstract

AbstractAn efficient approach for the reduction of cyclic N‐sulfonylimines using N‐heterocyclic carbene boranes as the hydride donor was developed, leading to various cyclic sulfamates and sulfonamides in excellent yields. The approach had broad scope including both the N‐sulfonyl aldimines and ketimines under mild reaction conditions, which proves that the NHC‐boranes are good alternatives as the reductive reagents.