The cationic iridium complex ([Ir(cod)2]OTf + rac-BINAP) efficiently catalyzed a sequential process of ortho-C-H bond functionalization, cyclization and dehydration, leading to a concise preparation of 1-methylene indene (benzofulvene) derivatives. The iridium complex operated as a catalyst in the ortho-C-H bond alkenylation of aryl ketones with alkynes and as a Lewis acid catalyst in the cyclization of the alkenylated product and the subsequent dehydration.
阳离子
铱络合物([Ir(cod)2]OTf + 外消旋-BINAP)高效催化了一系列邻位C-H键官能化、环化及脱
水过程,从而简便地制备了1-亚甲基
茚(苯并富烯)衍
生物。该
铱络合物作为催化剂,在芳基酮与
炔烃的邻位C-H键烯丙基化反应中发挥作用,并在烯丙基化产物环化及后续脱
水中作为Lewis酸催化剂。