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Original Articles

ZUR KENNTNIS DES NATRIUMDIPHENYLPHOSPHINOFORMIATS Ph2PCOONa1

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Pages 287-294 | Received 26 Oct 1990, Published online: 23 Sep 2006
 

Abstract

Ph 2 PCOONa 2, hergestellt dutch Reaktion von Ph2PNa mit CO2, wird in protischen Medien rasch unter Bildung von Ph2PH and CO2 hydrolysiert. Die Hydrolyse verlauft in Natronlauge sehr viel langsamer and es bilden sich zusätzlich geringe Mengen Ph2P(O)O und HCOO, Aus 2 and stöchiometrischen Mengen RI bilden sich tertiäre Phosphine Ph2PR (R[dbnd]Me, Et) während mit überschüssigem MeI das Phosphoniumsalz [Ph2PMe2]I erhalten wird. Ph2PCOOMe, Ph2PCOOSiMe3 bzw. Ph2PCSSNa wurden durch Umsetzung von 2 mit (MeO)2SO2, Me3SiCl bzw. CS2 synthetisiert. Ph2P(O)ONa and Ph2P(S)SNa entstanden bei der Reaktion von 2 mit O2 oder S8 in Benzol.

Concerning Sodiumdiphenylphosphinoformiate Ph2PCOONa1.

Ph2PCOONa 2, prepared from Ph2PNa and CO2, is readily hydrolyzed in protic media with formation of Ph 2 PH and CO2. Hydrolysis is much slower in NaOH and small quantities of Ph2P(O)O and HCOO are additionally formed. Reactions of 2 with RI in stoichiometrical amounts gave tertiary phosphines Ph2PR (R[dbnd]Me, Et) while the phosphonium compound [Ph2PMe2]I resulted from 2 and MeI in excess. Ph2PCOOMe, Ph2PCOOSiMe3 or Ph2PCSSNa were obtained from 2 and (MeO)2SO2, Me3SiCl or CS2. Ph2P(O)ONa and Ph2P(S)SNa were isolated when 2 was reacted with O2 or S8 in benzene.

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