321-21-1Relevant articles and documents
Simple and environment-friendly chemical synthesis method of 4-fluoro-2-methyl benzoic acid
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Paragraph 0003, (2020/04/02)
The invention relates to a simple and environment-friendly chemical synthesis method of 4-fluoro-2-methyl benzoic acid. According to the synthesis method, m-fluorotoluene and acetyl chloride are takenas starting raw materials, and are subjected to a Friedel-Crafts acylation reaction under the catalytic action of anhydrous aluminum trichloride, a haloform reaction is carried out with sodium hypochlorite, two isomers of 4-fluoro-2-methyl benzoic acid and 2-fluoro-4-methyl benzoic acid are simultaneously obtained after hydrolysis, and the isomers are separated through re-crystallizing so as to obtain the target product 4-fluoro-2-methylbenzoic acid. The route is mild in reaction condition, low in cost, environment-friendly and suitable for industrial production.
Palladium-Catalyzed ortho-C-H Methylation of Benzoic Acids
Lv, Weiwei,Wen, Si,Liu, Jing,Cheng, Guolin
, p. 9786 - 9791 (2019/08/26)
A palladium-catalyzed methylation of C-H bonds of benzoic acids with di-tert-butyl peroxide as the methylating reagent under an external oxidant and ligand-free conditions has been achieved. The reaction is found to be directed by a weakly coordinating carboxyl group, offering a facile route for the synthesis of highly functionalized ortho-methyl benzoic acids.
INHIBITORS OF STEAROYL-COA DESATURASE
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, (2009/06/27)
Provided herein are compounds of the formula (I): as well as pharmaceutically acceptable salts thereof, wherein the substituents are as those disclosed in the specification. These compounds, and the pharmaceutical compositions containing them, are useful for the treatment of diseases such as, for example, obesity.