Aryl Fluorosulfate Trapped Staudinger Reduction.
Gerui RenQinheng ZhengHua WangPublished in: Organic letters (2017)
A chemoselective Staudinger reduction/sulfur(VI) fluoride exchange cascade has been developed to join two chemical segments through an aryl sulfamate ester (RNH-SO2-OAr) linkage. Aryl fluorosulfate is exploited in this work as the first tetrahedral electrophilic trap for the in situ generated iminophosphorane. Ten examples using azide-containing compounds are presented.