Convenient synthetic routes to bidentate and monodentate 2-, 3- and 4-pyridyl phosphines: potentially useful ligands for water-soluble complex catalysts
摘要:
The monodentate and bidentate pyridyl phosphines, PR3 and R2P(CH2)(2)PR2, where R = 3- or 4-pyridyl can be prepared in high yields by treatment of butyllithium/TMEDA/3- or 4-bromopyridine with PCl3 or Cl2P(CH2)(2)PCl2 at low temperature. 1,2-Bis(di-2-pyridylphosphino)ethane is conveniently synthesised by an alternative route involving reaction of 1,2-dibromoethane with lithium di-2-pyridylphosphide. (C) 1998 Elsevier Science S.A. All rights reserved.
NMR and structural studies of gold(I) chloride adducts with bidentate 2-, 3- and 4-pyridyl phosphines
作者:Susan J. Berners-Price、Richard J. Bowen、Trevor W. Hambley、Peter C. Healy
DOI:10.1039/a809285k
日期:——
The 1∶2adducts of gold(I) chloride with the diphosphine ligands, 1,2-bis(di-n-pyridylphosphino)ethane (dnpype) for n = 2, 3 and 4 have been synthesized and solution properties characterized by NMR spectroscopy, including variable temperature one dimensional 31P1H} and 2D [31P, 31P] COSY experiments. The results show the 3-pyridyl (d3pype) and 4-pyridyl (d4pype) adducts to exist as bis-chelated monomeric
Convenient synthetic routes to bidentate and monodentate 2-, 3- and 4-pyridyl phosphines: potentially useful ligands for water-soluble complex catalysts
作者:Richard J Bowen、A.Christopher Garner、Susan J Berners-Price、Ian D Jenkins、Rodney E Sue
DOI:10.1016/s0022-328x(97)00722-5
日期:1998.3
The monodentate and bidentate pyridyl phosphines, PR3 and R2P(CH2)(2)PR2, where R = 3- or 4-pyridyl can be prepared in high yields by treatment of butyllithium/TMEDA/3- or 4-bromopyridine with PCl3 or Cl2P(CH2)(2)PCl2 at low temperature. 1,2-Bis(di-2-pyridylphosphino)ethane is conveniently synthesised by an alternative route involving reaction of 1,2-dibromoethane with lithium di-2-pyridylphosphide. (C) 1998 Elsevier Science S.A. All rights reserved.
Berners-Price, Susan J.; Bowen, Richard J.; Harvey, Peta J., Journal of the Chemical Society, Dalton Transactions, 1998, # 11, p. 1743 - 1750
作者:Berners-Price, Susan J.、Bowen, Richard J.、Harvey, Peta J.、Healy, Peter C.、Koutsantonis, George A.