Premium
Cobalt(II) Complexes Bearing a Bulky N‐Heterocyclic Carbene for Catalysis of Kumada–Tamao–Corriu Cross‐Coupling Reactions of Aryl Halides
Author(s) -
Matsubara Kouki,
Sueyasu Tsukasa,
Esaki Mariko,
Kumamoto Aya,
Nagao Shinya,
Yamamoto Hitomi,
Koga Yuji,
Kawata Satoshi,
Matsumoto Taisuke
Publication year - 2012
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201200095
Subject(s) - chemistry , aryl , cobalt , iodide , bromide , halide , pyridine , catalysis , carbene , medicinal chemistry , coupling reaction , polymer chemistry , alkyl , inorganic chemistry , organic chemistry
Cobalt(II) iodide, bromide, and chloride react with 1 equiv. of IPr [1,3‐bis(2,6‐diisopropylphenyl)imidazol‐2‐ylidene] to form a series of tetrahedral dimeric (30e) complexes of cobalt(II) in good yields. These were transformed into the monomeric forms in the presence of pyridine. These complexes were characterized by SQUID, XPS, UV/Vis spectroscopy, elemental analysis, and X‐ray crystallography, and were found to have high catalytic activity for Kumada–Tamao–Corriu cross‐coupling reactions of aryl halides.