Accession Number : AD0467161

Title :   HIGH TEMPERATURE POLYMERS FROM 1,3-DEPOLAR ADDITION REACTIONS.

Descriptive Note : Quarterly rept. no. 2, 1 May-31 Jul 65,

Corporate Author : IOWA UNIV IOWA CITY DEPT OF CHEMISTRY

Personal Author(s) : Stille, John K.

Report Date : 31 JUL 1965

Pagination or Media Count : 19

Abstract : The synthetic investigations of two diamino acids, m-phenylenediglycine and N,N'-4,4-oxydiphenylene) diglycine, which are precursors to two bis-sydnones, have been carried out. Two model compounds, 1-3-diphenylpyrazole and 1,1'-diphenyl3,3'-p-phenylenedipyrazole, have been systhesized from reactions of 3-phenyl sydnone with phenyl acetylene and p-diethynylbenzene, respectively. The latter reaction has been investigated with respect to reaction solvent in order to uncover optimum conditions for the polymerization. Three nitrile imine precursors, phenylhydrazide chloride, isophthaloylhydrazide chloride, and terephthaloylhydrazide chloride, have been synthesized. The reaction of phenylhydrazide chloride with p-diethnylbenzene in the presence of triethyl amine yields 1,1',3.3'-tetraphenyl5,5'-p-phenylenedipyrazole. (Author)

Descriptors :   (*POLYMERS, SYNTHESIS(CHEMISTRY)), (*HEAT RESISTANT PLASTICS, SYNTHESIS(CHEMISTRY)), AMINO ACIDS, NITROGEN HETEROCYCLIC COMPOUNDS, OXYGEN HETEROCYCLIC COMPOUNDS, KETONES, NITRILES, CHEMICAL REACTIONS, POLARIZATION, POLYMERIZATION, POLYCYCLIC COMPOUNDS, HYDRAZINE DERIVATIVES, AROMATIC COMPOUNDS, CHLORINE COMPOUNDS, STABILITY, HEAT.

Distribution Statement : APPROVED FOR PUBLIC RELEASE