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    • 10. 发明授权
    • Method for producing aromatic and heteroaromatic carboxylic acids, carboxylic acid esters and carboxylic acid amides
    • 芳族和杂芳族羧酸,羧酸酯和羧酸酰胺的制备方法
    • US08703992B2
    • 2014-04-22
    • US12994271
    • 2009-05-25
    • Nina ChallandAnsgar Gereon AltenhoffJoachim Schmidt-LeithoffKathrin Wissel-StollMichael RackJoachim Rheinheimer
    • Nina ChallandAnsgar Gereon AltenhoffJoachim Schmidt-LeithoffKathrin Wissel-StollMichael RackJoachim Rheinheimer
    • C07C67/36
    • C07C231/10C07C51/10C07C67/36C07C63/04C07C69/76C07C235/84
    • Process for the preparation of aromatic and heteroaromatic carboxylic acids, carboxylic acid esters and carboxamides by the reaction of aromatic or heteroaromatic halides R—Xn, in which n=integer from 1 to 6, R=substituted or unsubstituted and aromatic or heteroaromatic radical and X=chlorine, bromine or iodine atom, with carbon monoxide and water, ammonia, alcohols or amines in the presence of bases and zero-valent or divalent palladium compounds and bidentate diphosphanes or complexes of zero-valent or divalent palladium with bidentate diphosphanes, in which use is made of bidentate diphosphanes (R1—)(R2—)P—Y—P(—R3)(—R4) in which R1 to R4=unsubstituted aryl radicals or aryl radicals substituted with at least one radical exhibiting a positive resonance effect or a positive inductive effect, or unsubstituted or substituted cycloalkyl radicals, and Y=hydrocarbon group with a total of 2 to 20 carbon atoms, in which at least one of the carbon atoms carries only one or no hydrogen atom as substituent; except for the reaction of 4-bromo-3-difluoromethyl-1-methylpyrazole with 2-(3,4,5-trifluorophenyl)aniline and carbon monoxide to give N-[2-(3,4,5-trifluorophenyl)phenyl]-3-difluoromethyl-1-methylpyrazole-4-carboxamide.
    • 通过芳族或杂芳族卤化物R-Xn的反应制备芳族和杂芳族羧酸,羧酸酯和羧酰胺的方法,其中n = 1至6的整数,R =取代或未取代的芳族或杂芳族基团和X 在碱和零价或二价钯化合物和二价二膦或零价或二价钯与二齿二膦的配合物存在下,用一氧化碳和水,氨,醇或胺进行氯,溴或碘原子,其中 使用二价二膦(R1 - )(R2-)P-Y-P(-R3)( - R4),其中R1至R4 =未取代的芳基或被至少一个表现出正共振效应的基团取代的芳基 或正电感效应,或未取代或取代的环烷基,Y =总共2至20个碳原子的烃基,其中至少一个碳原子仅携带一个或不具有氢原子 原子作为取代基; 除了4-溴-3-二氟甲基-1-甲基吡唑与2-(3,4,5-三氟苯基)苯胺和一氧化碳反应,得到N- [2-(3,4,5-三氟苯基)苯基] -3-二氟甲基-1-甲基吡唑-4-甲酰胺。