Reported herein are ligand controlled, chemodivergent [4+2] or [2+2] cycloaddition reactions between readily available 1,3-dienes and alkynes. These reactions, catalyzed by cationic CoI proceed with high regio- and enantioselectivies to give nearly enantiopure functionalized 1,4- cyclohexadienes or cyclobutenes from the same starting materials.
本文报道的是容易获得的 1,3-二烯和
炔烃之间
配体控制的
化学发散 [4+2] 或 [2+2] 环加成反应。这些由阳离子 Co I催化的反应以高区域选择性和对映选择性进行,从相同的原料中得到几乎对映纯的官能化
1,4-环己二烯或
环丁烯。