C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
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.
Newallis Peter E.
Prasad Vidyanatha A.
Schmidt K.g. Thomas
Aktiengesellschaft Bayer
Corporation Bayer
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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