Preparation of 2-amino-5-alkyl-1,3,4-thiadiazoles

C - Chemistry – Metallurgy – 07 – D

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260/308.3

C07D 285/12 (2006.01) C07D 285/135 (2006.01)

Patent

CA 1039290

ABSTRACT OF DISCLOSURE The present invention relates to an improved process for preparing 2-amino-5-alkyl-1,3,4-thiadiazole compounds by reacting an aliphatic acid and a thiosemicarbazide in a mineral acid medium comprising 15 to 35 percent sulfuric acid and 65 to 85 percent polyphosphoric acid be weight.

205934

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