20372-63-8Relevant academic research and scientific papers
PLATELET ADP RECEPTOR INHIBITORS
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Page/Page column 31-33, (2008/06/13)
Compounds are provided which are useful as platelet ADP receptor inhibitors, for treating thrombosis and for reducing the likelihood and/or severity of a secondary ischemic event in a patient.
Synthesis of 4-Hydroxyquinolin-2(1H)-one analogues and 2-substituted quinolone derivatives
Jung,Jung,Park
, p. 61 - 67 (2007/10/03)
A versatile synthetic method for preparing 4-hydroxyquinolone and 2-substituted quinolone compounds from simple benzoic acid derivatives was demonstrated. The synthetic strategies involve the use of well known ethyl acetoacetate synthesis, malonic ester s
Synthesis and antibacterial activity of 2-substituted 6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acids
Jung, Jae-Chul,Baek, Shin,Park, Oee-Sook
, p. 664 - 676 (2007/10/03)
A series of 2-substituted 6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acids was prepared and evaluated for antibacterial activity. The 6-fluoro-2-methyl-1-prenyl-1,4-dihydro-7-(3,5-dimethylpiperazinyl)-4-oxo-3-quinolinecarboxylic acid (14f) exhibited
Process for the preparation of 4,5-difluoroanthranilic acid from 4,5-difluorophthalic anhydride or 4,5-difluorophthalic acid
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, (2008/06/13)
4,5-Difluoroanthranilic acid may be prepared by decarboxylating 4,5-difluorophthalic anhydride or 4,5-difluorophthalic acid by heating in dimethyl acetamide, N-methyl-2-pyrrolidone or quinoline, optionally by reaction with copper, copper oxide, copper salts, or halides and salts of Zn, Cd, Ag and Ni as a catalyst, whereby 3,4-difluorobenzoic acid is formed; nitrating said 3,4-difluorobenzoic acid in a mixture of nitric and sulfuric acids to form 2-nitro-4,5-difluorobenzoic acid, and reducing said 2-nitro-4,5-difluorobenzoic acid to form 4,5-difluoroanthranilic acid.
Preparation of 2-choloro-4,5-difluorobenzoic acid from 4,5-difluorophthalic anhydride of 4,5-difluorophthalic acid
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, (2008/06/13)
2-Chloro-4,5-difluorobenzoic acid may be prepared by decarboxylating 4,5-difluorophthalic anhydride or 4,5-difluorophthalic acid by heating in N-methyl-2-pyrrolidone or dimethyl acetamide optionally using copper, copper oxide, copper salts, or halides or salts of Zn, Cd, Ag and Ni as a catalyst to form 3,4-difluorobenzoic acid, reacting said 3,4-difluorobenzoic acid with a mixture of nitric and sulfuric acids to form 2-nitro-4,5-difluorobenzoic acid, reacting said 2-nitro-4,5-difluorobenzoic acid with elemental chlorine at a temperature of between 185° and 195° C. to form 2-chloro-4,5-difluorobenzoic acid.
Intermediates for preparing 1,4-dihydro-4-oxo-quinoline-3-carboxylic acid esters
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, (2008/06/13)
Compounds of the formula: wherein Y is OR1, fluoro, chloro, methyl, R1, and R3 are independently selected from hydrogen and C1-C4 alkyl, R2 is C1-C4 alkyl and X is fluoro, chloro or bromo, with the proviso that when Y is OH, X cannot be bromo and with the proviso that X can be fluoro only if R2 is methyl.
