Process and intermediate compounds for the preparation of pesticidal fluoroolefin compounds
    1.
    发明申请
    Process and intermediate compounds for the preparation of pesticidal fluoroolefin compounds 失效
    用于制备杀虫氟烯烃化合物的方法和中间体化合物

    公开(公告)号:US20020062049A1

    公开(公告)日:2002-05-23

    申请号:US09950905

    申请日:2001-09-12

    IPC分类号: C07C041/22

    摘要: A two-step process for the preparation of fluoroolefin compounds of formula I 1 wherein R is hydrogen or alkyl, and R1 is alkyl or cyclopropyl, or R and R1 are taken together with the carbon atom to which they are attached to form a cyclopropyl group; Ar is phenyl or naphthyl both of which are optionally substituted; Ar1 is phenoxyphenyl, biphenyl, phenyl, benzylphenyl, or benzoylphenyl, all of which may be optionally substituted, comprising reacting fluorobromoolefin compounds of formula II 2 with organozinc compounds of formula III or IV 3 in the presence of a palladium catalyst and a solvent, which compounds of formula II are obtained by reacting aldehyde compounds of formula V 4 with (a) fluorotribromomethane, (b) a tri(substituted)phosphine or a hexaalkylphosphoramide or a mixture thereof, and (c) zinc, in the presence of a solvent, compounds of formula II.

    摘要翻译: 制备式I的氟烯烃化合物的两步法,其中R是氢或烷基,R 1是烷基或环丙基,或R和R 1与它们所连接的碳原子一起形成环丙基; Ar是任选被取代的苯基或萘基; Ar1是苯氧基苯基,联苯基,苯基,苄基苯基或苯甲酰基苯基,所有这些可以任选被取代,包括在钯催化剂和溶剂的存在下使式II的氟代溴代烯烃化合物与式III或IV的有机锌化合物反应, 式II的化合物是通过使式V的醛化合物与(a)氟代溴甲烷,(b)三(取代的)膦或六烷基磷酰胺或其混合物的醛化合物反应而得到的,和(c)锌在溶剂存在下, 二,