Accession Number:

ADA141429

Title:

Organophosphazenes. 17. The Synthesis of Trimethylsilylacetylene and Terminal Acetylene Derivatives of Hexfluorocyclotriphosphazene.

Descriptive Note:

Technical rept.,

Corporate Author:

VERMONT UNIV BURLINGTON DEPT OF CHEMISTRY

Report Date:

1984-05-18

Pagination or Media Count:

18.0

Abstract:

The reactions of lithio trimethylsilylacetylene, LiCCSiMe3, with hexafluorocyclotriphosphazene, N3P3F6, lead to the new alkynphosphazenes N3P3F6, lead to the new alkynphosphazenes N3P3F6-nCSCiMe3n n1,2. Both the geminal and non-geminal isomers are observed in the 31P and 19F n.m.r. spectra. A reinvestigation of the reaction of lithio phenylacetylene, LiCCPh, with N3P3F6 showed that, at the stage of bis substitution, in addition to the previously reported major product, gem-N3P3F4CC Ph2, small amounts of the non-geminal N3P3F4CCPh2 isomers are formed. The reactions of N3P3F6-nCCSiMe3n n1,2 with potassium fluoride in anhydrous ethanol leads to the terminal acetylene derivatives, N3P3F4-n OC2H52CCHn n1,2.

Subject Categories:

  • Polymer Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE