Palladium complexes of P,P and P,S type bidentate ligands: Implication in Suzuki-Miyaura cross-coupling reaction
New palladium complexes of the type [PdCl2(η2- P∩P)] (1a,1b) and [PdCl2(η2-P∩S)] (1c,1d) have been synthesised by the reaction of PdCl2 with P,P and P,S type bidentate ligands in 1:1 mol ratio, where,
Effect of steric and electronic properties of palladium complexes with bidentate diphosphine ligands on the basis of diphenyl oxide on arylation of amines
New complexes of palladium chloride with bidentate diphosphine ligands on the basis of 2,2′-bis(diorganylphosphino)diphenyl oxides were prepared by three methods, and their catalytic activity in arylation of amines was studied. 2005 Pleiades Publishing, Inc.
Veits,Mutsenek
p. 207 - 211
(2007/10/03)
The effect of the bite angle of diphosphane ligands on activity and selectivity in palladium-catalyzed cross-coupling
The effect of the natural bite angle (βn) of diphosphane ligands on catalyst selectivity and activity in the palladiumcatalyzed cross-coupling of sec-butyl magnesium chloride with bromobenzene was investigated. The calculated natural bite angles range from 78° for dppe (1,2-bisdiphenylphosphanoethane) to 110° for Xantphos. The natural bite angle of diphosphane ligands has a large effect on catalyst selectivity and activity. Both rate and selectivity of the cross-coupling reaction increase with increasing bite angle and reach a maximum value with DPEphos (βn = 102.7° ). Larger bite angles of the diphosphane ligands result in a decreased selectivity and activity.
Kranenburg, Mirko,Kamer, Paul C. J.,Van Leeuwen, Piet W. N. M.
p. 155 - 157
(2007/10/03)
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