Sequential Catalytic Reactions for the Synthesis of Benzofulvenes Using an Iridium Complex with Dual Function
作者:Takanori Shibata、Kyoji Tsuchikama、Mitsugu Kasagawa、Kohei Endo
DOI:10.1055/s-0029-1218575
日期:2010.1
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。