Crossed Regio‐ and Enantioselective Iron‐Catalyzed [4+2]‐Cycloadditions of Unactivated Dienes
作者:Elena Braconi、Nicolai Cramer
DOI:10.1002/anie.202112148
日期:2022.2.7
An enantioselective iron-catalyzed cross-[4+2]-cycloaddition of unactivated branched and linear dienes is described. The illustrated process provides a very efficient and atom-economic access to chiral 1,3-substituted vinyl-cyclohexenes under very mild reaction conditions. The development of a chiral bis-dihydroisoquinoline ligand class was essential to obtain excellent levels of chemo-, regio- and
描述了未活化的支链和直链二烯的对映选择性铁催化交叉-[4+2]-环加成。所示方法提供了在非常温和的反应条件下非常有效且原子经济地获得手性 1,3-取代的乙烯基环己烯的途径。开发手性双-二氢异喹啉配体类别对于获得优异水平的化学选择性、区域选择性和对映选择性至关重要。