80036-89-1Relevant articles and documents
Preparation method of 4-amino-5-ethylsulfonyl-2-methoxybenzoic acid
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, (2022/03/31)
The invention discloses a preparation method of 4-amino-5-ethylsulfonyl-2-methoxybenzoic acid, and the preparation method comprises the following steps: taking 4-amino-5-ethylsulfonyl-2-methoxybenzoic acid as a raw material; the preparation method comprises five steps of methylation, thiocyanation, ethylation, oxidation and a hydrolysis reaction, and finally, 4-amino-5-ethylsulfonyl-2-methoxybenzoic acid is prepared. The preparation method provided by the invention can efficiently prepare 4-amino-5-ethylsulfonyl-2-methoxybenzoic acid under mild reaction conditions, only uses ethanol and water as solvents, has the advantages of simple operation, high yield, good product quality, less three wastes, low cost and the like, and is convenient for large-scale production.