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P-C versus C-H bond cleavage in coordinated bis(dimethylphosphino)methane: controlled access to either phosphinite or
Roberto Quesada1, Javier Ruiz, Víctor Riera
1Departamento de Química Orgánica e Inorgánica, Facultad de Química, Universidad de Oviedo, 33071 Oviedo, Spain.
Chemical Communications (Cambridge, England)
|August 23, 2003
Abstract:
Treatment of fac-[Mn(CNPh)(CO)3(dmpm)]ClO4 (1) with KOH affords neutral phosphinite complex fac-[Mn(PMe2O)(CNPh)(CO)3(PMe3)] (2) as a result of P-C bond cleavage on the dmpm ligand, whereas when carrying out the reaction in the presence of iodine the diphosphinoketenimine derivative fac-[MnI(CO)3[(PMe2)2C=C=NPh]] (4) is obtained after deprotonation and further functionalization of the central carbon atom of the diphosphine.