The thermal decomposition of phosphonium alkoxides has been investigated. In general, n-alkyltriphenyl-phosphonium salts with sodium alkoxides at 280° give n-alkyldiphenylphosphine and alkyl phenyl ether. Olefin formation is a minor reaction but becomes the major one with secondary- and tertiary- alkylphosphonium alkoxides. With sodium thiophenoxide the reaction is entirely nucleophilic displacement of triphenylphosphine.
C. T. Eyles and S. Trippett, J. Chem. Soc. C, 1966, 67 DOI: 10.1039/J39660000067
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