4,5-Dihydrothiazoles and preparation thereof

Details 4,5-Dihydrothiazoles and preparation thereof 4,5-Dihydrothiazoles and preparation thereof

1984-05-21

1985-11-26

Henderson, Christopher A.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

44 63, 252390, C07D27710

Patent

active

045555761

ABSTRACT:
2,5-dihydrothiazoles are prepared by reacting aza-alkylene-dienes with sulfur at relatively low temperatures for example below about 160.degree. C. Where the reaction is carried out at relatively higher temperature, for example above about 160.degree. C., such as 160.degree. to 250.degree. C., 4,5-dihydrothiazoles are formed. In addition 2,5-dihydrothiazoles can be converted to 4,5-dihydrothiazoles by heating them to temperatures above about 160.degree. C.

REFERENCES:
patent: 3879524 (1975-04-01), Wehrmeister
Maguet et al., Bull. Soc. Chim. Fr., 1978, pp. 539-549.

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