1,3,4-Oxadiazoles containing the pentafluorothio (SF.sub.5) Grou

Details 1,3,4-Oxadiazoles containing the pentafluorothio (SF.sub.5) Grou 1,3,4-Oxadiazoles containing the pentafluorothio (SF.sub.5) Grou

1993-05-10

1993-12-28

Ramsuer, Robert W.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D27110

Patent

active

052741036

ABSTRACT:
1,3,4-Oxadiazoles of the formula ##STR1## are prepared by cyclization (dehydration) of the corresponding diacylhydines of the formula R.sub.1 C(O)NHNHC(O)R.sub.2 with phosphorous pentachloride or phosphorous oxychloride wherein R.sub.1 is --CF.sub.2 CF.sub.2 CF.sub.2 SF.sub.5, --CF.sub.2 CF.sub.2 SF.sub.5, or --CH.sub.2 SF.sub.5 and R.sub.2 is --CH.sub.2 CH.sub.2 C(NO.sub.2).sub.3, --CH.sub.2 CH.sub.2 C(NO.sub.2).sub.2 F, --CF.sub.2 CF.sub.2 CF.sub.3, --CF.sub.2 CF.sub.3, --CF.sub.3, or --CH.sub.2 SF.sub.5. The compounds are useful as plasticizers.

REFERENCES:
patent: 4740628 (1988-04-01), Adolph et al.
patent: 5214189 (1993-05-01), Sitzmann
patent: 5241071 (1993-08-01), Sitzmann

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