Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany.
J Am Chem Soc. 2010 Aug 4;132(30):10227-9. doi: 10.1021/ja1037935.
An asymmetric catalytic epoxidation of alpha-branched, alpha,beta-unsaturated aldehydes is presented. A highly synergistic combination of a primary cinchona-based amine and a chiral phosphoric acid was found to promote the reaction with excellent enantiocontrol for alpha-monosubstituted and alpha,beta-disubstituted enals.
本文介绍了一种不对称催化α-支链、α,β-不饱和醛的环氧化反应。研究发现,一种初级的金鸡纳生物碱和手性磷酸的高度协同组合能够促进反应,对α-单取代和α,β-二取代烯醛具有优异的对映选择性控制。