Highly Enantioselective Synthesis of 3-Substituted Furanones by Palladium-Catalyzed Kinetic Resolution of Unsymmetrical Allyl Acetates
作者:Bin Mao、Yining Ji、Martín Fañanás-Mastral、Giuseppe Caroli、Auke Meetsma、Ben L. Feringa
DOI:10.1002/anie.201109075
日期:2012.3.26
near‐perfect Pd‐catalyzed kinetic resolution of 1,3‐disubstituted unsymmetrical allylic acetates uses silyl enol ethers as nucleophiles to access the important 3‐substituted‐furanone scaffold (see scheme; DACH=diaminocyclohexyl, dba=dibenzylideneacetone). The reaction proceeds under mild conditions and provides the desired products with excellent chemo‐, regio‐, and enantioselectivity.
解决问题:1,3-二取代的不对称烯丙基乙酸酯的Pd催化动力学拆分接近完美,使用甲硅烷基烯醇醚作为亲核试剂来访问重要的3-取代的呋喃酮骨架(请参见方案; DACH =二氨基环己基,dba =二苄叉基丙酮) 。反应在温和的条件下进行,可提供具有优异的化学,区域和对映选择性的所需产物。