Process for preparing substituted benzoyl cyanide amidinohydrazones
    1.
    发明授权
    Process for preparing substituted benzoyl cyanide amidinohydrazones 失效
    取代苯甲酰氰化脒基腙的制备方法

    公开(公告)号:US06329521B2

    公开(公告)日:2001-12-11

    申请号:US09789634

    申请日:2001-02-22

    IPC分类号: C07C25517

    CPC分类号: C07C281/18 C07D249/14

    摘要: The present invention provides a process for preparing a compound of the general formula (I): wherein R1 to R5 are independently selected from hydrogen, halogen, C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl or C1-6 alkoxy, all optionally substituted by one or more of halogen, hydroxy and aryl groups, as well as being independently selected from amino, mono- or disubstituted amino, alkenyloxy, acyl, acyloxy, cyano, nitro, aryl and alkylthio groups, which process comprises reacting a compound of the general formula (II): wherein R1 to R5 are as defined in formula (I), with aminoguanidine bicarbonate in a mixture of a water-soluble solvent and polyphosphoric acid.

    摘要翻译: 本发明提供了制备通式(I)化合物的方法:其中R 1至R 5独立地选自氢,卤素,C 1-6烷基,C 2-6烯基,C 2-6炔基或C 1-6烷氧基,全部 任选地被一个或多个卤素,羟基和芳基取代,以及独立地选自氨基,单或二取代的氨基,烯氧基,酰基,酰氧基,氰基,硝基,芳基和烷硫基,该方法包括使化合物 的通式(II):其中R 1至R 5如式(I)中所定义,与氨基胍碳酸氢盐在水溶性溶剂和多磷酸的混合物中。

    Method for producing 4-cyano-3-oxobutanoate and 4-ctano-3-hydroxybutanoate
    2.
    发明授权
    Method for producing 4-cyano-3-oxobutanoate and 4-ctano-3-hydroxybutanoate 失效
    4-氰基-3-氧代丁酸酯和4-碳酸-3-羟基丁酸酯的制备方法

    公开(公告)号:US06781009B2

    公开(公告)日:2004-08-24

    申请号:US09984334

    申请日:2001-10-29

    申请人: Ryuhei Wakita

    发明人: Ryuhei Wakita

    IPC分类号: C07C25517

    摘要: There are provided a method for producing a 4-cyano-3-oxobutanoate by reacting a 4-halo-3-oxobutanoate with an alkaline metal cyanide in methanol, a process for producing 4-cyano-3-hydroxybutanoate therefrom.

    摘要翻译: 提供了通过使4-卤代-3-氧代丁酸酯与碱金属氰化物在甲醇中反应制备4-氰基-3-氧代丁酸酯的方法,由此制备4-氰基-3-羟基丁酸酯的方法。