Chemical process
    1.
    发明授权
    Chemical process 失效
    化学工艺

    公开(公告)号:US5504173A

    公开(公告)日:1996-04-02

    申请号:US382043

    申请日:1995-02-09

    CPC分类号: C07C67/307

    摘要: Process for preparing the (E)-isomer of a compound (II) by contacting the (E) or (Z) isomer of the 2-methylphenyl precursor, or a mixture of both, with bromine in an organic solvent, in the presence of a polymeric base and light. ##STR1##

    摘要翻译: PCT No.PCT / GB93 / 01592 Sec。 371日期:1995年2月9日 102(e)1995年2月9日PCT PCT 1993年7月28日PCT公布。 第WO94 / 05620号公报 日期为1994年3月17日。通过使2-甲基苯基前体的(E)或(Z)异构体或两者的混合物与溴接触来制备化合物(II)的(E) - 异构体的方法, 有机溶剂,在聚合物基质和光的存在下。 (二)

    Preparation of 2-hydroxyphenyl-acetic acid
    3.
    发明授权
    Preparation of 2-hydroxyphenyl-acetic acid 失效
    2-羟基苯基 - 乙酸的制备

    公开(公告)号:US5221772A

    公开(公告)日:1993-06-22

    申请号:US710730

    申请日:1991-06-04

    CPC分类号: C07C51/367

    摘要: A process for the preparation of: ##STR1## the process comprising treating (2-chlorophenyl)acetic acid with an alkali metal hydroxide (for example, sodium hydroxide) in an organic solvent (for example, an inert hydrocarbon solvent), in the presence of a catalyst (for example a copper salt) at a temperature above 130.degree. C. (for example in the range 130.degree. C. to 300.degree. C.).

    摘要翻译: 一种制备方法:包括在有机溶剂(例如惰性烃溶剂)中用碱金属氢氧化物(例如氢氧化钠)处理(2-氯苯基)乙酸的方法, 的催化剂(例如铜盐)在130℃以上(例如在130℃至300℃的范围内)。

    Preparation of selected epoxides
    4.
    发明授权
    Preparation of selected epoxides 失效
    制备选择的环氧化物

    公开(公告)号:US4490222A

    公开(公告)日:1984-12-25

    申请号:US485896

    申请日:1983-04-18

    IPC分类号: C07D303/08 C25B3/00 C25B3/02

    CPC分类号: C25B3/00 C07D303/08

    摘要: A process for the production of epoxides of the formula (I): ##STR1## in which the benzene ring A is substituted with 1 to 3 halogen atoms, which are the same or different, and optionally carries other substituents, and R.sup.1 is ##STR2## which is the same as or different from the other group ##STR3## or C.sub.1-6 alkyl, the process comprising electrolyzing the corresponding alkene of the formula (II): ##STR4## in a medium comprising a solvent for the alkene and an aqueous solution of a halogen salt, the solvent/water ratio by weight being greater than unity, the solvent being miscible with water at the solvent/water ratio used and being chemically inert to both the alkene and the free halogen produced from the halogen salt by the electrolysis.The epoxides are useful in the synthesis of fungicidal compounds and certain of the epoxides are novel compounds.

    摘要翻译: 制备式(I)的环氧化物的方法:其中苯环A被相同或不同的1至3个卤素原子取代,并且任选地带有其它取代基,并且R 1 是与另一组“IMAGE”或C 1-6烷基相同或不同的方法,该方法包括在包含溶剂的介质中电解相应的式(II)烯烃:(II) 对于烯烃和卤素盐的水溶液,溶剂/水的重量比大于1,溶剂与溶剂/水的比例与水混溶,并且对于烯烃和游离卤素都是化学惰性的 由卤素盐通过电解。 环氧化物可用于杀真菌化合物的合成,某些环氧化物是新化合物。