Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 73, Issue 19, Pages 7800-7802Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jo801460w
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- Centre National de la Recherche Scientifique (CNRS)
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Efficient cross-coupling, allowing a straightforward access to congested benzophenones, between aromatic aldehydes and potassium aryltrifluoroborates, is described in the presence of a rhodium/tri-tert-butylphosphane catalyst system and acetone as cosolvent. The use of the stable phosphonium salts of tri-tert-butylphosphane prevented the use of highly oxidizable tri-tert-butylphosphane and allowed a careful control of the stoichiometry with the rhodium.
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