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ChemicalBook CAS DataBase List Bardoxolone
890707-28-5

Bardoxolone synthesis

12synthesis methods
-

Yield:890707-28-5 85%

Reaction Conditions:

with hydrogenchloride;dihydrogen peroxide;acetic acid at 5 - 20;

Steps:

Step-4 : 2-Amino-5-chloro-N,3-dimethylbenzamide
To a solution of 2-amino-N,3-dimethylbenzamide (4 g, 0.023) and hydrochloric acid (8 ml) in acetic acid (12 ml) was added hydrogen peroxide (30%, 0.032 mol) at 5-10°C. The reaction mixture was stirred for 5-6 h at room temperature. The progress of the reaction was monitored by HPLC. After completion of the reaction, water was added into the reaction mixture. The resultant solid product was isolated by filtration and washed with water. Yield: 85% and purity: 95%.

References:

EUROFINS ADVINUS LIMITED WO2021/33172, 2021, A1 Location in patent:Page/Page column 9; 16-17

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