Theoretical and experimental studies on the gold(I)‐catalyzed formal [4+2] cycloaddition of dienynes are consistent with a mechanism that proceeds by means of cyclopropyl gold(I) carbenes instead of simple carbocations. This work shows that homoallylic stabilization is significant even for systems in which the tertiary carbocation is stabilized by two methyl groups.
金(I)催化的二烯的正式[4 + 2]环加成反应的理论和实验研究与通过环丙基
金(I)碳烯而不是简单的碳阳离子进行的机理是一致的。这项工作表明,即使对于叔碳阳离子被两个甲基稳定化的系统,均烯丙基稳定化也很重要。