Preparation of furfuryl alcohols
    80.
    发明专利
    Preparation of furfuryl alcohols 失效
    富勒烯醇的制备

    公开(公告)号:JPS59118780A

    公开(公告)日:1984-07-09

    申请号:JP23058582

    申请日:1982-12-24

    摘要: PURPOSE: To obtain the titled substance useful as an intermediate for agricultural chemicals, drugs, etc. in high yield without problems of pollution, by reacting a furfural with Mg and a porpargyl halide in THF in the presence of a zinc halide as a catalyst, followed by hydrolysis.
    CONSTITUTION: A furfural shown by the formula I (R
    1 is H, CH
    3 , or C
    2 H
    5 ) and a propargyl halide (e.g., propargyl chloride, 3-bromo-1-butene) are simultaneously treated with Mg in THF in the presence of a catalyst (of a zinc halide (e.g., zinc chloride) to give a compound shown by the formula II (R
    2 is propargyl, or α-methylpropargyl). An amount of the propargyl halide used is 1.1W1.3 times the molar amount of the furfural, and an amount of Mg used is preferably ≥1.05 times the molar amount of it. The reaction temperature is 10W60°C.
    EFFECT: Free from problems of recovery of mercury, as it replaces the existing method using a mercury catalyst.
    COPYRIGHT: (C)1984,JPO&Japio

    摘要翻译: 目的:通过在卤化锌作为催化剂的存在下,通过糠醛与镁和卤代卟啉在THF中反应,获得高产率,无污染的农药,药物等作为中间体的标题物质, 然后水解。 构成:在催化剂存在下,用Mg在THF中同时处理由式I表示的糠醛(R 1是H,CH 3或C 2 H 5)和炔丙基卤(例如炔丙基氯,3-溴-1-丁烯) (卤化锌(如氯化锌)),得到式Ⅱ所示化合物(R2为炔丙基或α-甲基炔丙基),所用炔丙基卤用量为糠醛摩尔量的1.1〜1.3倍, 使用的Mg的量优选为其摩尔量的1.05倍,反应温度为10-60℃。效果:不用汞回收的问题,因为它取代了使用汞催化剂的现有方法。