Enantioselective Synthesis of α-Quaternary Mannich Adducts by Palladium-Catalyzed Allylic Alkylation: Total Synthesis of (+)-Sibirinine
作者:Yoshitaka Numajiri、Beau P. Pritchett、Koji Chiyoda、Brian M. Stoltz
DOI:10.1021/ja512124c
日期:2015.1.28
A catalytic enantioselective method for the synthesis of α-quaternary Mannich-type products is reported. The two-step sequence of (1) Mannich reaction followed by (2) decarboxylativeenantioselective allylic alkylation serves as a novel strategy to in effect access asymmetric Mannich-type products of “thermodynamic” enolates of substrates possessing additional enolizable positions and acidic protons