Process for producing 2-(methylthio)-5-(trifluoromethyl)-1,3,4-t

Details Process for producing 2-(methylthio)-5-(trifluoromethyl)-1,3,4-t Process for producing 2-(methylthio)-5-(trifluoromethyl)-1,3,4-t

1997-12-12

1999-05-18

Gerstl, Robert

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D285/12

Patent

active

059051574

ABSTRACT:
The present invention provides a process of making 2-(methylthio)-5-(trifluoromethyl)-1,3,4-thiadiazole. The process includes the steps of (a) reacting methyldithiocarbazinate with a molar excess of trifluoroacetic acid; and (b) removing the water and excess trifluoroacetic acid. Water and excess trifluoroacetic acid are preferably removed via distillation.

REFERENCES:
patent: 3562284 (1971-02-01), Newman et al.
patent: 5101034 (1992-03-01), Schmidt et al.
patent: 5147443 (1992-09-01), Diehr et al.
patent: 5162539 (1992-11-01), Diehr
Aldrich Catalog #30,203-1 p. 1461, 1996.
Gyoefi and Csavassy, Acta Chimica Academiae Scientiarum Hungaricae, Tomus 82 (1): 91-97, 1974.

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