Both arylhydrazines and quaternary ammonium salts are readily accessible or commercially available chemicals that show versatile reactivity in Pd-catalyzed coupling reactions via C−N bond cleavage. A tremendous array of coupling reactions involving reaction partners such as organoborons, aryl silanes, alkenes, alkynes, arylation or alkylation reagents in C−H functionalization and carbonylation reactions are summarized, in which arylhydrazines or quaternary ammonium salts function as aryl or alkyl donors. This account mainly focuses on recent advances in Pd-catalyzed coupling reactions with arylhydrazines or quaternary ammonium salts via C−N bond cleavage, including mechanistic elucidations.

中文翻译：

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Pd催化芳基肼和铵盐通过C-N键断裂偶联的最新进展

芳基肼和季铵盐都是容易获得或市售的化学品，它们在通过 CN 键断裂的 Pd 催化偶联反应中显示出多种反应性。总结了一系列涉及反应伙伴的偶联反应，如有机硼、芳基硅烷、烯烃、炔烃、芳基化或烷基化试剂在 C-H 官能化和羰基化反应中，其中芳基肼或季铵盐作为芳基或烷基供体。该帐户主要关注 Pd 催化通过 CN 键断裂与芳基肼或季铵盐偶联反应的最新进展，包括机理阐明。