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    • 68. 发明申请
    • IMPROVED PROCESS FOR PREPARING CYCLOPROPYLACETYLENE
    • 改进工艺用于生产环丙基乙炔
    • WO98040333A1
    • 1998-09-17
    • PCT/EP1998/000927
    • 1998-02-18
    • C07C1/30C07C13/04C07C17/00C07C17/18C07C22/00C07F9/535
    • C07F9/535C07C1/30C07C17/00C07C17/18C07C2601/02C07C13/04C07C22/00
    • The invention concerns a process for halogenating cyclopropylmethyl ketone with at least one dihalogen triorganophosphorane of the general formula (I): R3PHal2, in which the R groups can be the same or different and designate a saturated or unsaturated aliphatic C1-C20 hydrocarbon group, a phenyl or C1-C4 alkylphenyl group which can optionally be further substituted by one to two fluorine, chlorine and/or nitro groups, P means phosphorus and Hal means chlorine, bromine or iodine, at 80 to 130 DEG C, the dihalogen triorganophosphorane of the general formula (I) being prepared in situ from triorganophosphane oxide or triorganophosphane sulphide of the general formula (II), R3PA, in which R has the meaning given under formula (I) and A stands for oxygen or sulphur, with a halogenation reagent. The process is characterized in that the triorganophosphane oxide or triorganophosphane sulphide is used in catalytic amounts. The invention also concerns the halogenation product of the cyclopropyl ketone obtained according to this process and a process for reacting it to form cyclopropylacetylene.
    • 本发明是一种用于卤化环丙基甲基酮与(I)上述通式中的至少一个Dihalogentriorganophosphoran的方法:R3PHal2,其中基团R可以是相同的或不同的,并且是饱和或不饱和脂族C1〜C20的烃基,苯基或 C1-C4烷基苯基,其可任选被一个被进一步取代,以两个氟,氯和/或硝基取代,表示,P是磷,且Hal是氯,溴或碘,在80〜130℃,其中所述Dihalogentriorganophosphoran 在从Triorganophosphanoxid或Triorganophosphansulfid通式(II)原位通式(I)的:R3PA,其中R如在式(I)中所定义属于给定的含义,A是氧或硫时,产生与卤化试剂,其特征在于 以催化量使用的Triorganophosphanoxid或Triorganophosphansulfid 是卤化产物由Cyclopropylketons的该方法获得,并且对于其转化为环丙基乙炔的方法。