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ChemicalBook CAS DataBase List 2,4-Dihydroxypyrimidine-5-carboxylic acid

2,4-Dihydroxypyrimidine-5-carboxylic acid synthesis

9synthesis methods
-

Yield:23945-44-0 96.1%

Reaction Conditions:

with dihydrogen peroxide;1-hydroxy-1,2,3-benzotriazine-4(3H)-one in water at 130; for 3 h;Autoclave;Temperature;

Steps:

6
Add 100 g of thymine and 300 mL of water to the autoclave, and add 35 mL of hydrogen peroxide at a concentration of 30%.15 g of 1-hydroxy-1,2,3-benzotriazine-4(3H)-one and 35 g of the catalyst prepared in Example 3, replacing the inside of the autoclave with an oxygen atmosphere, and heating to 130 ° C for 3 h.The reaction solution was cooled, filtered, concentrated, and placed in an ice-water mixture to cool.150 g of a white solid was precipitated, the yield was 96.1%, and the purity was 99.3%.

References:

Zhengzhou Gaike Technology Co., Ltd.;Guo Libing;Fan Liming CN108341785, 2018, A Location in patent:Paragraph 0014-0020

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