In a synthetic route that varies from the standard procedure requiring irradiation, the (η6-C6H5Cl)Cr(CO)2PPh 3 complex is obtained upon reacting (η6-C6H5Cl)Cr(CO)3 with tetrakis(triphenylphosphine)palladium(0), CuI, and trimethylsilylphenylacetylene in triethylamine. The X-ray crystal structure of the yellow-orange crystals of (η6-C6H5Cl)Cr(CO)2PPh 3 allows structural comparisons to related (arene)Cr(CO)2PR3 complexes.
First Sonogashira coupling reactions with the chlorobenzeneCr(CO)2PPh3 complex
Alkynylated benzeneCr(CO)2PPh3 complexes 4 are readily synthesized in moderate to good yields by Sonogashira couplings of the chlorobenzeneCr(CO)2PPh3 complex 2 with terminal alkynes 3.
Ansorge, Markus,Mueller, Thomas J.J.
p. 174 - 178
(2007/10/03)
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