The synthesis of hydrobenzoimidazoles from para‐quinamines and 1,3,5‐triazinanes was achieved via a formal [3+2] annulation reaction in the presence of In(OTf)₃ as the catalyst. Further studies demonstrated that the synthesis of hydrobenzooxazoles could also be accomplished via the same strategy from para‐quinols and 1,3,5‐triazinanes.

中文翻译：

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由对-奎宁胺和1,3,5-三嗪并通过正式的[3 + 2]环状反应合成氢苯并咪唑

在In（OTf）₃作为催化剂的情况下，通过正式的[3 + 2]环化反应，由对喹胺和1,3,5-三嗪酮合成氢化苯并咪唑。进一步的研究表明，也可以通过对苯二酚和1,3,5-三嗪并酮的相同策略完成氢化苯并恶唑的合成。