Kumada−Corriu Reactions of Alkyl Halides with Alkynyl Nucleophiles
摘要:
Pd-2(dba)(3)-Ph3P-catalyzed Kumada-Corriu coupling reactions of unactivated alkyl bromides or iodides with an alkynyl nucleophile furnish C-sp-C(sp)3 bond formation, Alkynyl nucleophiles can be alkynyllithiums or the corresponding Grignard reagents. The superior performance of Ph3P ligand over the trialkylphosphine ligands indicates that this cross-coupling reaction may be a reductive-elimination-controlled process.