C-S cross-coupling reactions catalyzed by a non-symmetric phosphinito-thiophosphinito PSCOP-Ni(II) pincer complex
作者:Juan M. Serrano-Becerra、Hugo Valdés、Daniel Canseco-González、Valente Gómez-Benítez、Simón Hernández-Ortega、David Morales-Morales
DOI:10.1016/j.tetlet.2018.07.063
日期:2018.9
A new non-symmetric phosphinito-thiophosphinito POCSP-Ni(II) pincer compound was synthetized and characterized. The molecular structure of [NiCI(C6H3-2-(OPPh2)-6-(SPPh2))] (1) was unequivocally determined by single crystal X-ray diffraction analysis, showing the Ni center to be located into a slightly distorted square planar geometry. This compound was used as efficient catalyst in C-S couplings of disulfides with iodobenzenes, exhibiting good activity and selectivity as well as tolerance to different functional groups. (C) 2018 Elsevier Ltd. All rights reserved.
Synthesis of a novel non-symmetric Pd(II) phosphinito–thiophosphinito PSCOP pincer compound
作者:Juan M. Serrano-Becerra、Simón Hernández-Ortega、David Morales-Morales
DOI:10.1016/j.ica.2010.02.003
日期:2010.4
The reaction of 3-mercaptophenol with diphenylchlorophosphine in a 1:2 ratio in the presence of NEt3 as base, affords cleanly the non-symmetric ligand [C6H4-1-(SPPh2)-3-(OPPh2)](1). The direct reaction of this ligand with PdCl2 in refluxing toluene affords the non-symmetric phosphinito-thiophosphinito PSCOP pincer complex [PdClC6H3-2-(SPPh2)-6-(OPPh2)}](2). (C) 2010 Elsevier B. V. All rights reserved.
Novel and facile procedure for the synthesis of Ni(II) and Pd(II) PSCOP pincer complexes. Evaluation of their catalytic activity on C-S, C-Se and C-C cross coupling reactions
facile procedure for the synthesis of non-symmetric phosphinito-thiophosphinito PSCOP pincercomplexes based on Ni(II) and Pd(II) was developed. The synthesis of the complexes was carried out in a single step, starting from 3,3-dihydroxydiphenyldisulfide. The Ni(II) complexes were tested as catalysts in C-S and C-Se coupling reactions, being the tBu derivative 3-Ni the one exhibiting the best performance