A process for making...

C - Chemistry – Metallurgy – 07 – D

Patent

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C07D 285/125 (2006.01)

Patent

CA 2254610

The present invention provides a process for making 2- (methyithio)-5-(trifluoromethyl)-1,3,4-thiadiazole. The process includes the steps of reacting methyidithiocarbazinate with trifluoroacetic acid to form a mixture of 2-(methylthio)-5-(trifluoromethyl)-1,3,4-thiadiazole and 2,5-bis-(methylthio)-1,3,4-thiadiazole and selectively removing the 2,5-bis- (methylthio)-1,3,4-thiadiazole by acidifying the mixture.

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