Convenient synthetic routes to bidentate and monodentate 2-, 3-and 4-pyridyl phosphines: potentially useful ligands for water-soluble complex catalysts

…, AC Garner, SJ Berners-Price, ID Jenkins…

Index: Bowen, Richard J.; Garner, A. Christopher; Berners-Price, Susan J.; Jenkins, Ian D.; Sue, Rodney E. Journal of Organometallic Chemistry, 1998 , vol. 554, # 2 p. 181 - 184

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Citation Number: 44

Abstract

The monodentate and bidentate pyridyl phosphines, PR3 and R2P (CH2) 2PR2, 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) 2PCl2 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.