期刊
APPLIED ORGANOMETALLIC CHEMISTRY
卷 26, 期 3, 页码 130-134出版社
WILEY
DOI: 10.1002/aoc.2822
关键词
iron carbonyl complexes; DPEphos ligand; metal-containing phosphine; density functional theory; Suzuki-Miyaura reaction
资金
- Department of Science and Technology, New Delhi
- University Grants Commission (UGC), New Delhi [SR/FTP/CS-119/2005, SR/S1/PC-13/2009, 36-73/2008]
- CSIR, New Delhi
The reaction of [Fe3(CO)12] with bis[2-(diphenylphosphino)phenyl]ether (DPEphos) in refluxing THF afforded a mononuclear complex, [Fe(CO)4(1-P-DPEphos)] (1), as major product and a binuclear complex, [Fe2(CO)6(mu-CO)(mu-P,P-DPEphos)] (2), as minor product respectively. The DPEphos ligand acts as a terminal P-donor in complex 1 and a bridging P,P-donor in complex 2. Complexes 1 and 2 were characterized by elemental analysis, fast atom bombardment mass spectrometry, FT-IR, 1H and 31P{1H} NMR spectroscopy. The structure of complex 1 has been tentatively assigned by density functional theory calculations and its analogy with reported complexes. Combination of complex 1 and PdCl2 furnished an active catalyst for the SuzukiMiyaura cross-coupling reactions of various aryl halides with arylboronic acids. Interestingly, under the same experimental condition, complex 1/PdCl2 as catalyst showed superior activity over the DPEphos/PdCl2 system. Copyright (C) 2012 John Wiley & Sons, Ltd.
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