Substituted indenes can be prepared after a sequence [1,3] O-acyl shift-hydroarylation-[1,3] O-acyl shift. Each step is catalyzed by a cationic NHC-Gold(I) species generated in situ after reaction between [(IPr)AuOH] and HBF4·OEt2. This interesting silver-free way is fully supported by a computational study justifying the formation of each intermediate.
取代的
茚可以在序列[1,3]O-酰基转移-加氢芳基化-[1,3]O-酰基转移之后制备。每个步骤均由 [(IPr)AuOH] 和
HBF4·OEt2 反应后原位生成的阳离子 NHC-Gold(I) 催化。这种有趣的无
银方法得到了计算研究的充分支持,证明了每种中间体的形成是合理的。