Catalytic Asymmetric Vinylogous Mannich Reaction of <i>N</i>-(2-Thienyl)sulfonylimines
作者:Alvaro Salvador González、Ramón Gómez Arrayás、Marta Rodríguez Rivero、Juan C. Carretero
DOI:10.1021/ol8019082
日期:2008.10.2
Both cyclic and acyclic silyl dienol ethers participate efficiently in the asymmetricvinylogousMannichreaction of N-2-thienylsulfonylimines catalyzed by copper(I) complexes of Fesulphos ligands. This procedure displays wide imine and nucleophile versatility, high enantiocontrol, and complete gamma-regioselectivity in most cases examined. The mild sulfonamide deprotection allows the resulting products