Dinuclear macrocyclic palladium complexes having pincer coordinating groups and their catalytic properties in Mizoroki-Heck reactions

作者：Tsubomura Taro^*; Chiba Mutsumi; Nagai Shogo; Ishihira Mariko; Matsumoto Kenji; Tsukuda Toshiaki

来源：Journal of Organometallic Chemistry, 2011, 696(23): 3657-3661.

DOI：10.1016/j.jorganchem.2011.08.024

• Macrocyclic complexes
• Pincer complexes
• Dinuclear complexes
• Mizoroki-Heck reaction
• Catalysis

An improved synthetic method of palladium(II) dinuclear macrocyclic complexes have been described. Each of the two isomers of the complexes [Pd2LBr2] has a macrocyclic ligand L in which two 2,6-bis(diaminomethyl)phenyl units coordinate to the Pd(II) centers with N, C, N donor atoms. Substitution of the bromo ligands of one of the isomer of the complexes with acetonitrile ligands affords a new dinuclear complex. Catalytic activities of these complexes were studied for the Mizoroki-Heck type reactions of iodobenzene and styrene. High turnover number up to 30,000 was achieved using one of the isomer of the complexes.

• 出版日期2011-11-15