Axial coordination of NHC ligands on dirhodium (II) complexes: Generation of a new family of catalysts
…, PMP Gois, LF Veiros, V André, MT Duarte…
Index: Trindade, Alexandre F.; Gois, Pedro M. P.; Veiros, Luis F.; Andre, Vania; Duarte, M. Teresa; Afonso, Carlos A. M.; Caddick, Stephen; Cloke, F. Geoffrey N. Journal of Organic Chemistry, 2008 , vol. 73, # 11 p. 4076 - 4086
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Citation Number: 65
Abstract
An efficient new methodology for the arylation of aldehydes is disclosed which uses dirhodium (II) catalysts and N-heterocyclic carbene (NHC) ligands. Complexes of Rh2 (OAc) 4 with one and two NHCs attached on the axial positions were successfully isolated, fully characterized, and used as catalysts in the reaction. The saturated monocomplex ((NHC 5) Rh2 (OAc) 4) 31 was shown to be the most active catalyst and was particularly efficient in ...
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