A chelating diphosphine with a single stereogenic phosphorus atom; Rp or Sp-(2-methoxyphenyl)-P-phenyl-P-(2'-diphenylphosphino) ethylphosphine

Article abstract of DOI:10.1016/S0957-4166(00)86279-5

A synthesis of the title diphosphine is described, in which the key step is a Michael addition of lithium diphenylphosphide to a vinylphosphineborane 9, itself formed by stereospecific ring opening of the ephedrine derived oxazaphospholidine borane by rea