The Pauson-Khand-like carbonylative cocyclizations of alkynes with cyclopropylallene and with 1,3-dicyclopropylallene occur regioselectively and lead to 4-(cyclopropylmethylene)cyclopentenones (43-59% for six examples).
炔烃与环丙基烯烃和 1,3-二环丙基烯烃的保森-汉德类羰基化反应具有区域选择性,可生成 4-(环丙基亚甲基)
环戊烯酮(六个实例的生成率为 43-59%)。