Abstract Oxidation of (E)-1, 2-bis (diphenylphosphanyl) ethene with hydrogen peroxide gave (E)-1, 2-bis (diphenylphosphoryl) ethene. Diels-Alder reaction of (E)-1, 2-bis (diphenylphosphoryl) ethene with cyclopentadiene yielded 2, 3-bis (diphenyl-phosphoryl) bicyclo [2.2. 1] hept-5-ene (NorphosO). rac-NorphosO was resolved with O, O- dibenzoyltartaric acid.(R, R)-and (S, S)-NorphosO were reduced with trichlorosilane to ...
