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    • 92. 发明公开
    • 크로만 카르복실산의 제조 방법
    • 生产氯羧酸的方法
    • KR1020020018102A
    • 2002-03-07
    • KR1020010052440
    • 2001-08-29
    • 주식회사 쿠라레
    • 하야시바라다츠히코사토준코도리하라마사히로
    • C07D311/58
    • C07D311/74
    • PURPOSE: Provided are a method for producing chroman-carboxylic acid and a novel intermediate useful for the synthesis of chroman-carboxylic acid. The chroman-carboxylic acid is useful as, for example, a starting material of pharmaceutical products showing beta 3-adrenoreceptor activity, a starting material of pharmaceutical products having alpha 2-antagonism, and a starting material for the synthesis of a fungicide. CONSTITUTION: The method for producing a chroman-carboxylic acid of the formula(2), wherein R3 is a hydrogen atom or an alkyl group, comprises reacting a dialkylchroman-carboxylic acid of the formula(1), wherein R1 and R2 are each independently an alkyl group and R3 is as defined above, with an aromatic hydrocarbon in the presence of a Lewis acid.
    • 目的:提供色满酐羧酸的制备方法和可用于合成色满羧酸的新型中间体。 色满羧酸可用作例如显示β3肾上腺素受体活性的药物的原料,具有α2-拮抗作用的药物的起始原料和用于合成杀真菌剂的原料。 构成:式(2)的色满酐羧酸的制备方法,其中R3是氢原子或烷基,包括使式(1)的二烷基苯并二氢吡喃羧酸与其中R1和R2各自独立地 烷基和R 3如上所定义,与路易斯酸存在下的芳烃。