Tandem bicycle: A gold‐catalyzed geminal carbo‐functionalization reaction of 3‐siloxy‐1,3‐dien‐8‐ynes proceeded smoothly to give bicyclo[4.3.0]nonanes stereoselectively through ring expansion of the bicyclic carbene complex intermediates. The product configuration was different from that of the thermal Diels–Alder adduct.
双人自行车:通过3-双环卡宾配合物中间体的扩环反应,
金催化的3-甲
硅烷氧基-1,3-二烯基-8-
炔烃的双官能[4.3.0]
壬烷顺利进行。产品结构与Diels-Alder热加合物的结构不同。