Process for the preparation of...

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C - Chemistry, Metallurgy

07

D

260/248.6

C07D 253/06 (2006.01) C07D 253/075 (2006.01)

Patent

CA 1049519

PROCESS FOR THE PREPARATION OF 6-TERT.-BUTYL- 3-MERCAPTO-4-AMINO-1,2,4-TRIAZIN-5(4H)-ONE Abstract of the Disclosure 6-Tert.-butyl-3-mercapto-4-amino-1,2,4-triazin-(4H)- one is prepared by reacting pinacolone with a sulfur chloride at 0° to 80°C, optionally reacting the mixture with an aqueous amine solution, hydrolyzing the resulting product with an alkali metal hydroxide, heating the resulting mixture from 2 to 10 hours at 80° to 150°C, liberating a 3,3-dimethyl-2-oxo- butyric acid by acidifying with a mineral acid and reacting an aqueous solution of said 3,3-dimethyl-2-oxo-butyric acid with thiocarbohydrazide to yield the desired product.

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