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    • 48. 发明专利
    • Novel preparation of olefin compound
    • 空值
    • JPS5754126A
    • 1982-03-31
    • JP12904980
    • 1980-09-19
    • Hokko Chem Ind Co Ltd
    • KUMADA MAKOTOHAYASHI TAMIOHAMADA MITSUO
    • C07C1/32B01J27/00B01J27/10B01J31/00B01J31/12C07B31/00C07B37/04C07B61/00C07C1/00C07C11/00C07C13/00C07C15/00C07C15/40C07C67/00C07F7/08
    • Y02P20/52
    • PURPOSE: To obtain the titled compound having increased number of carbon atoms with a small amount of a catalyst easily in high yield, by coupling a silylenol ether with a Grignard reagent using a specific nickel salt, e.g., nickel bromide, etc. as a catalyst.
      CONSTITUTION: The atmosphere in a reactor is replaced by N
      2 gas, and a silylenol ether, e.g., 1-trimethylsiloxy-cyclohexane, etc., shown by the formula I (R
      1 WR
      3 are H, alkyl, aryl, etc., R
      1 and R
      2 form ring) is coupled with a Grignard reagent, e.g., diethyl ether of magnesium methyl bromide, etc., shown by the formula II (R
      4 is alkyl, aryl, trimethysilyl, etc.; X is halogen) in a solvent in the presence of a nickel salt catalyst, e.g., nickel acetylacetonate, nickel bromide, etc. shown by the formula III [Y is (CH
      3 CO)
      2 CH, (C
      6 H
      5 CO)
      2 CH, (t-C
      4 H
      9 CO)
      2 CH, Br, Cl, or I] at room temperature to give an olefin compound shown by the formula IV.
      COPYRIGHT: (C)1982,JPO&Japio
    • 目的:通过使用特定的镍盐(例如溴化镍等)作为催化剂,通过使甲硅烷醇醚与格氏试剂偶联来获得具有少量催化剂的标准化合物,其中少量的催化剂容易以高产率获得 。 构成:反应器中的气氛被N 2气体代替,并且由式I表示的甲硅烷醇醚,例如1-三甲基甲硅烷氧基 - 环己烷等(R1-R3是H,烷基,芳基等,R1和 R2形式的环)与Grignard试剂(例如甲基溴化镁的二乙醚等)偶合,如式II所示(R4是烷基,芳基,三甲基甲硅烷基等; X是卤素)在溶剂中存在下 的镍盐催化剂,例如式III所示的乙酰丙酮镍,溴化镍等:室温下[Y是(CH 3 CO)2 CH,(C 6 H 5 CO)2 CH,(t-C 4 H 9 CO)2 CH,Br,Cl或I] 温度以得到式IV所示的烯烃化合物。