Hydrazones readily synthesized from N-aminopyrroles or N-aminoazoles and aldehydes undergo Rh(III)-catalyzed dual C-H activation and coupling with aryl- and alkyl-substituted alkynes to give pyrrolopyridazines or azolopyridazines, respectively. This transformation represents a rare example of hydrazoyl C-H activation and proceeds without heteroatom functionality to direct C-H activation. Hydrazones derived from aromatic, alkenyl, and aliphatic aldehydes were effective inputs, and tethering the alkyne to the hydrazone enabled annulations to more complex, tricyclic products.

中文翻译：

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通过铑（III）催化的双CH活化对dra和炔烃的环化反应：吡咯并哒嗪和氮杂哒嗪的合成。

由N-氨基吡咯或N-氨基唑和醛容易合成的经过Rh（III）催化的双CH活化，并与芳基和烷基取代的炔烃偶联，分别得到吡咯并哒嗪或氮杂哒嗪。该转化代表了酰肼基CH活化的罕见例子，并且在没有杂原子官能团的情况下继续进行以指导CH活化。衍生自芳族，烯基和脂族醛的是有效的输入，并且将炔烃与to拴系可以使环化成更复杂的三环产物。