Process for preparing dihalovinylcyclopropanecarboxylic acids
    8.
    发明授权
    Process for preparing dihalovinylcyclopropanecarboxylic acids 失效
    二卤乙烯基环丙烷羧酸的制备方法

    公开(公告)号:US4500733A

    公开(公告)日:1985-02-19

    申请号:US466182

    申请日:1983-02-14

    CPC分类号: A01N53/00

    摘要: A cyclopropanecarboxylic acid of the formula ##STR1## is prepared by the reaction of a compound of the formula ##STR2## with an alkali metal hydroxide or alkaline earth metal hydroxide in an ether type solvent. R.sup.1, R.sup.2, and R.sup.4 each independently is hydrogen or a hydrocarbon residue, R.sup.3 is hydrogen or lower alkyl, X is halogen, and A is --CH.sub.2 --CX, 3 or --CH.dbd.CX.sub.2.

    摘要翻译: 通过式(Ia)化合物与碱金属氢氧化物或碱土金属氢氧化物在醚类溶剂中的反应来制备式“IMAGE”的环丙烷羧酸。 R1,R2和R4各自独立地是氢或烃残基,R3是氢或低级烷基,X是卤素,A是-CH2-CX3或-CH = CX2。