HIGH TEMPERATURE POLYMERS FROM 1,3-DIPOLAR ADDITION REACTIONS.
Quarterly progress rept. no. 8, 1 Nov 66-31 Jan 67,
IOWA UNIV IOWA CITY DEPT OF CHEMISTRY
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The synthesis of N-3-pyridyl-sydnone has been effected by the dehydration of N-nitroso-N-3-pyridyl-glycine. The synthesis of 3-phenylsydnone-4-carboxylic acid has been carried out by lithiation and carbonation of 3-phenylsydnone and this acid has been converted to the acid chloride. The disydnone 4,4-bis3-phenylsydnonylsulfone has been prepared from the lithium salt of 3-phenylsydnone. The 1,1-diphenyl-3, 3-m-phenylene-delta 2-pyrazoline has been synthesized. The dinitrilimine precursor, 5,5-p-phenylene-ditetrazole, has been synthesized by the reaction of terephthalonitrile with sodium azide. The polymerization of p-phenylene-3,3-disydnone with m-divinylbenzene to yield poly1,1-p-phenylene-3,3-m-phenylene-di-delta 2-pyrazoline has been effected. A series of polymerizations with terephthaloylphenylhydrazide chloride in which the monomer balance was varied has been carried out. The polymerization of 2,2-diphenyl-5,5-p-phenyleneditetrazole with 4,4-dicyanobiphenyl has afforded poly1,1-diphenyl-3,3 -p-phenylene-5,5-p-biphenylene-ditriazole. Author
- Organic Chemistry