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ChemicalBook CAS DataBase List 1,2,5-Thiadiazole-3,4-dicarboxylicacid
3762-94-5

1,2,5-Thiadiazole-3,4-dicarboxylicacid synthesis

2synthesis methods
-

Yield: 88%

Reaction Conditions:

with sulfuric acid in water at 0 - 120; for 14 h;

Steps:

1
To a 2 L four-necked flask,Add water: 600g,Slowly add concentrated sulfuric acid:600 g, dubbed 50% sulfuric acid aqueous solution,Followed by addition of 4,5-dicyano-1,2,3-thiadiazole: 300 g,120 ° C for 12 hours,Cooling to 0 ,Stir for 2 hours,Filtration gave 337.7 g of white solid 1,2,3-thiadiazole 4,5-dicarboxylic acid,Yield: 88%.

References:

Anhui SaidiBiological Technology Co., Ltd;WEI, XIAOYAN;HE, YING;WEI, WEI;YU, LIDENG CN106220585, 2016, A Location in patent:Paragraph 0019; 0023; 0024; 0025