Photochemical Organocatalytic Regio‐ and Enantioselective Conjugate Addition of Allyl Groups to Enals
作者:Martin Berger、Davide Carboni、Paolo Melchiorre
DOI:10.1002/anie.202111648
日期:2021.12.6
The first catalytic enantioselective conjugate addition of allyl groups to α,β-unsaturated aldehydes is disclosed. The chemistry exploits the visible-light-excitation of chiral iminium ions to activate allyl silanes towards the formation of allylic radicals, which are then stereoselectively intercepted with high α-regioselectivity, complete chemoselectivity, and moderate to good enantioselectivity
公开了烯丙基与 α,β-不饱和醛的第一次催化对映选择性共轭加成。该化学方法利用手性亚胺离子的可见光激发来活化烯丙基硅烷以形成烯丙基自由基,然后以高 α-区域选择性、完全化学选择性和中等至良好的对映选择性立体选择性拦截。