from cyclopropyl‐substituted propargyl esters by using a [Rh(CO)2Cl}2] catalyst. This metal catalyst promoted the 1,3‐acyloxy migration of propargyl esters and a subsequent [5+1] cycloaddition of the resulting allenylcyclopropanes in the presence of CO with high regioselectivity.
Lead Rh-ole:通过使用 [Rh(CO) 2 Cl} 2 ] 催化剂,由环丙基取代的炔
丙酯制备高度取代的
环己烯酮。这种
金属催化剂在 CO 存在下促进了炔
丙酯的 1,3-酰氧基迁移和随后得到的烯
丙基环丙烷的 [5+1] 环加成反应,具有高区域选择性。