An efficient and divergent synthesis of N-arylbenzimidazoles and N-arylindazoles from arylamino oximes based on reaction conditions selection was developed. The synthesis was approached by treating oximes with BTC and the chemoselectivity was regulated by the amount of Et₃N. This switchable N–N and N–C bond formation process features mild reaction conditions, simple execution, high chemoselectivity and broad substrate scope.

中文翻译：

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由芳基氨基肟化学选择性合成N-芳基苯并咪唑和N-芳基吲唑的不同策略

根据反应条件的选择，开发了一种由芳基氨基肟合成N-芳基苯并咪唑和N-芳基吲唑的有效方法。合成是通过用BTC处理肟来实现的，化学选择性受Et ₃ N的量调节。这种可切换的N–N和N–C键形成过程具有反应条件温和，操作简单，化学选择性高和底物范围广的特点。