Vaska’s complex [IrCl(CO)(PPh3)2] efficiently catalyzes the intramolecular carbonylative [2+2+1] cycloaddition of allenynes. A dimethyl substituent on the allene terminus and a low partial pressure of carbon monoxide realize the selective engagement of the internal Ï-bond of allene.
Vaska配合物[IrCl(CO)(PPh3)2]高效催化炔丙基内的羰基化[2+2+1]环加成反应。烯丙基末端的二甲基取代基和较低的
二氧化碳分压实现了烯丙基内π键的选择性活化。