Preparation of perfluorinated 1,2,4-oxadiazoles

Details Preparation of perfluorinated 1,2,4-oxadiazoles Preparation of perfluorinated 1,2,4-oxadiazoles

1980-06-27

1982-02-16

Rollins, Alton D.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

528401, 528422, 564229, C07D27106, C08G 7306

Patent

active

043160352

ABSTRACT:
Fluorinated alkyl or alkylether 1,2,4-oxadiazole compounds are prepared by cyclizing the corresponding alkyl or alkylether imidoylamidoximes in vacuo or in an inert atmosphere at a temperature within the range of 40.degree. to 100.degree. C. for a period of 8 to 144 hours in the presence of an acid compound which can accept ammonia to form a salt. The imidoylamidoximes usable in this process may be either polymeric or nonpolymeric. The products, when polymeric, have excellent heat, chemical and solvent resistance.

REFERENCES:
patent: 4145524 (1979-03-01), Frosch
Clapp, Advances in Heterocyclic Chemistry, vol. 20, (Academic Press, 1976), pp. 66-71.

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