A planar chiral dirhodium paddlewheel complex Rh2(Sp−PCP)4 based on the [2.2]paracyclophane has been synthesized for the challenging cyclopropanation of venylarene derivatives with tert‐butyl α‐diazo propionates. The homobimetallic rhodium catalyst relies on the high steric demand and rigidity of [2.2]paracyclophane that favors the cyclopropanation of 1‐aryl substituted, 1,1‐disubstituted and benzannulated
合成了一种基于[2.2]对环
环糊精的平面手性ho
铑配合物Rh 2(S p -PCP)4,用于具有挑战性的
丙烯芳烃衍
生物与叔丁基α-重氮
丙酸酯的
环丙烷化。均双
金属
铑催化剂依赖于[2.2]对环环烷的高空间需求和刚性,后者在室温下具有较高的非对映选择性,有利于1-芳基取代的,1,1-二取代的和苯并环化的烯烃的
环丙烷化,而不是β-
氢化物的迁移。