Catalytic Asymmetric 1,6-Conjugate Addition of<i>para</i>-Quinone Methides: Formation of All-Carbon Quaternary Stereocenters
作者:Zhaobin Wang、Yuk Fai Wong、Jianwei Sun
DOI:10.1002/anie.201506701
日期:2015.11.9
mild catalytic asymmetric 1,6‐conjugate addition of para‐quinone methides (p‐QMs), a class of challenging reactions with previous limited success. Benefiting from chiral Brønsted acid catalysis, which allows in situ formation of p‐QMs, our reaction expands the scope to general p‐QMs with various substitution patterns. It also enables efficient intermolecular formation of all‐carbon quaternary stereocenters
本文描述的是对苯醌甲基化物(p- QMs)的一般温和催化不对称1,6-共轭加成反应,这是一类具有挑战性的反应,以前取得的成功有限。得益于手性布朗斯台德酸催化,它可以原位形成p- QM,我们的反应将范围扩展到具有各种取代方式的一般p- QM。它还能够以高对映选择性有效地分子间形成全碳四元立体中心。