Process for producing 2-(halomethyl)phenylacetic acid esters
    1.
    发明授权
    Process for producing 2-(halomethyl)phenylacetic acid esters 失效
    2-(卤代甲基)苯乙酸酯的制备方法

    公开(公告)号:US5886211A

    公开(公告)日:1999-03-23

    申请号:US981449

    申请日:1998-03-18

    摘要: 2-(Halomethyl)phenylacetic acid esters (3) which are useful as intermediates for producing agricultural fungicides are produced efficiently and conveniently by reacting a 3-isochromanone derivative (1) with a hydrogen halide and an alcohol or reacting (1) with a halomethyl alkyl ether and then reacting the product with an alcohol in the presence of a base. The starting compound, 3-isochromanone (1), is produced in good yield by reacting an .alpha.,.alpha.'-o-xylene dihalide (4) with carbon monoxide and water in an organic solvent in the presence of a palladium catalyst and an inorganic base and then treating the product with an acid. ##STR1##

    摘要翻译: PCT No.PCT / JP96 / 01677 Sec。 371日期1998年3月18日 102(e)1998年3月18日PCT PCT 1996年6月19日PCT公布。 公开号WO97 / 00850 PCT 日本1 9 9 2年1月9日 - 用于制备农药杀菌剂的中间体的(卤代甲基)苯乙酸酯(3)通过使3-异色满酮衍生物(1)与卤化氢和醇反应(或 1)与卤代甲基烷基醚反应,然后在碱的存在下使产物与醇反应。 通过使α,α'-二甲苯二卤化物(4)与一氧化碳和水在有机溶剂中在钯催化剂和无机物存在下反应,以良好的产率制备起始化合物3-异色满酮(1) 然后用酸处理产物。 + TR