Yb(OTf)3- or AuI-Catalyzed Domino Intramolecular Hydroamination and Ring-Opening of Sulfonamide-Substituted 1,1-Vinylidenecyclopropanediesters
作者:Lei Wu、Min Shi
DOI:10.1002/chem.201102159
日期:2011.11.18
compounds containing an alkyne moiety or a carbonyl group were efficiently synthesized from sulfonamide‐substituted vinylidenecyclopropanediesters, catalyzed by a hard Lewisacid Yb(OTf)3 and a soft Lewisacid AuI complex, respectively (see scheme). The products were obtained in moderate to excellent yields under mild conditions and the reaction mechanisms were discussed on the basis of control and 18O‐labeling