A flexible and efficient rhodium(III)-catalyzed intramolecular annulation of benzamides bearing tethered alkynes for the synthesis of indolizinones and quinolizinones is reported. This reaction shows a broad substrate scope and excellent functional-group tolerance, including different kinds of heterocyclic substrates, such as furan, thiophene, pyrrole, benzofuran, benzothiophene, indole and isonicotinamide substrates. This method also provides a practical and efficient approach for the synthesis of rosettacin and oxypalmatime.

中文翻译：

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铑（III）通过C–H活化催化分子内环化：罗塞他汀和羟帕马汀的简明合成

报道了一种柔性且有效的铑（III）催化的带有链状炔烃的苯甲酰胺的分子内环化反应，用于合成吲哚嗪酮和喹啉酮。该反应显示出较宽的底物范围和优异的官能团耐受性，包括不同种类的杂环底物，例如呋喃，噻吩，吡咯，苯并呋喃，苯并噻吩，吲哚和异烟酰胺底物。该方法还提供了一种合成罗塞他汀和羟帕马汀的实用而有效的方法。