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Synlett 1995; 1995(11): 1121-1122
DOI: 10.1055/s-1995-5197
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New Rhodium (II) Catalysts for Selective Carbene Transfer Reactions

Francisco Estevan, Pascual Lahuerta1 , Julia Pérez-Prieto2 , Salah-Eddine Stiriba, M. Angeles Ubeda
  • 1Departamento de Química Inorgánica, Facultad de Química, Universidad de Valencia, Burjasot, Valencia, Spain
  • 2Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Valencia, 46100 Burjasot, Valencia, Fax: 3864939, Spain
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Publication History

Publication Date:
31 December 2000 (online)

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Rh2(PC)2(OCOR)2 complexes, (PC = orthometalated phosphines, OCOR = carboxylates), (1a-1j), with very polarizable ligands, such as aromatic rings directly joined to the rhodium atoms, have been prepared. Their utility for chemoselective intramolecular carbene transfer has been demonstrated in the catalyzed decomposition of 1-diazo-3-phenyl-5-hexen-2-one (2), 1-diazo-5-methyl-3-(2-propenyl)-2-hexanone (3) and 1-diazo-5-methyl-3-phenyl-2-hexanone (4).

Dirhodium catalysts - intramolecular carbene transfer reactions - chemoselectivity - orthometalated phosphines - ancillary ligands