Organophosphazenes. XIII. Reactions of Hexafluorocyclotriphosphazene with p-N,N-Dimethylaminophenyl Lithium and Grignard Reagents

摘要

The reactions of p-dimethylaminophenyl Grignard and lithium reagents with hexafluorocyclotriphosphazene have been examined. These reactions yield the p-dimethylaminophenyl substituted cyclophosphazenes, in moderate to poor yields with the Grignard reagent giving the better yields. The reaction follows a non-geminal pathway giving an approximately equimolar mixture of cis and trans isomers at the disubstituted stage. In a 6:1 molar reaction of the Grignard reagent with P3N3F6, ring degradation appears to be the predominant mode of reaction with the trans - 2,4,6-P3N3F3(C6H4N(CH3)2)3 moiety being the only isolable cyclophosphazene.