Rhodium-Catalyzed Asymmetric 1,4-Addition of Sodium Tetraarylborates to β,β-Disubstituted α,β-Unsaturated Esters
作者:Ryo Shintani、Tamio Hayashi
DOI:10.1021/ol102674z
日期:2011.1.21
A rhodium-catalyzed 1,4-addition of sodium tetraarylborates to β,β-disubstituted α,β-unsaturated esters has been developed. Highly efficient asymmetric catalysis has also been described to create quaternary carbon stereocenters at the β-position of esters by tuning the ester group of substrates and employing a readily available chiral diene ligand.
已经开发了铑催化的四芳基硼酸钠的1,4-加成到β,β-二取代的α,β-不饱和酯上。还已经描述了通过调节底物的酯基并采用容易获得的手性二烯配体,在酯的β-位上产生季碳立体中心的高效不对称催化。