Accession Number : ADA141429

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

Descriptive Note : Technical rept.,


Personal Author(s) : Allen,C W ; Desorcie,J L ; Ramachandran,K

PDF Url : ADA141429

Report Date : 18 May 1984

Pagination or Media Count : 18

Abstract : The reactions of lithio trimethylsilylacetylene, LiC=CSiMe3, with hexafluorocyclotriphosphazene, N3P3F6, lead to the new alkynphosphazenes N3P3F6, lead to the new alkynphosphazenes N3P3F6-n(C=SCiMe3)n (n=1,2). 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, LiC=CPh, with N3P3F6 showed that, at the stage of bis substitution, in addition to the previously reported major product, gem-N3P3F4(C=C Ph)2, small amounts of the non-geminal N3P3F4(C=CPh)2 isomers are formed. The reactions of N3P3F6-n(C=CSiMe3)n (n=1,2) with potassium fluoride in anhydrous ethanol leads to the terminal acetylene derivatives, N3P3F4-n (OC2H5)2(C=CH)n (n=1,2).

Descriptors :   *Synthesis(Chemistry), *Acetylenes, *Phosphazene, *Cyclic compounds, Methyl radicals, Silicon compounds, Fluorine, Chemical derivatives, Lithium compounds, Chemical reactions, Alkyl radicals, Nuclear magnetic resonance, Spectra, Isomers, Substitution reactions

Subject Categories : Polymer Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE