It has been established that reductive complexation of functionalized benzofulvenes, which are readily prepared from commercially available indene and 2‐methylindene, with RhCl₃ in ethanol affords the corresponding indenyl–rhodium(III) dichlorides bearing substituents at the 1‐ (H or CO₂Et), 2‐ (H or Me), and 3‐ [CH₂Ph or CH₂(2‐MeOC₆H₄)] positions. The indenyl–rhodium(III) complexes bearing one ethoxycarbonyl group showed higher thermal stability and regioselectivity than our previously reported Cp^ERh^III complex toward the oxidative [3+2] annulation of acetanilides with internal alkynes.

中文翻译：

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功能化（η5-茚基）铑（III）配合物的合成及其在CH键功能化中的应用

已经确定，可以很容易地从商业上可获得的茚和2-甲基茚与官能团苯并富勒烯与乙醇中的RhCl ₃进行还原络合，得到相应的茚-铑（III）二氯化物，它们在1-（H或CO ₂）处带有取代基。Et），2-（H或Me）和3- [CH ₂ Ph或CH ₂（2-MeOC ₆ H ₄）]位置。带有一个乙氧基羰基的茚-铑（III）配合物比我们先前报道的Cp ^E Rh ^III配合物对乙炔化物与内部炔烃的氧化[3 + 2]环合反应显示出更高的热稳定性和区域选择性。