Journal
JOURNAL OF ORGANOMETALLIC CHEMISTRY
Volume 804, Issue -, Pages 73-79Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jorganchem.2015.12.039
Keywords
N-heterocyclic carbene; Palladium; Suzuki-Miyaura cross-coupling; Catalysis
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Funding
- National Natural Sciences Foundation of China [U1404205, 21202095, 21172139]
- Program for Science & Technology Innovation Talents in Universities of Henan Province [14HASTIT016]
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A series of novel N-heterocyclic carbene-palladium(II) complexes 3 were conveniently prepared from commercially available imidazolium salts, palladium chloride, and benzoxazole or benzothiazole in one step. All of the new complexes have been fully characterized by elemental analysis, H-1, C-13 NMR, and IR spectra. In addition, the molecular structures of complexes 3a-d have also been determined by X-ray single-crystal diffraction. The obtained palladium(II) catalysts showed efficient catalytic activity toward the Suzuki-Miyaura coupling of aryl as well as benzyl chlorides with arylboronic acids. Under the optimal reaction conditions, the expected biaryl products were obtained in moderate to high yields. (C) 2016 Elsevier B.V. All rights reserved.
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