58 Phosphorus organic compounds. XIX. Reduction of phosphorus compounds with alkali metals Horner, Leopold; Beck, Peter; Hoffmann, Hellmut Chemische Berichte (1959), 92 (), 2088-94CODEN: CHBEAM; ISSN:0009-2940. cf. C.A. 53, 1208h. P-halogen compds., quaternary phosphonium salts, P-O, and P-S compds. can be reduced with finely divided Na to Na phosphides or phosphines. Na phosphides and alkyl halides yield readily quaternary phosphonium salts. Na (30.4 g.) suspended at 100° in 450 cc.