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    • 5. 发明授权
    • Method for producing of 2,3-dimethylbutene-1 and 2,3-dimethylbutene-2
    • 2,3-二甲基丁烯-1和2,3-二甲基丁烯-2的制备方法
    • US06388160B1
    • 2002-05-14
    • US09577840
    • 2000-05-25
    • Makoto ItagakiGohfu SuzukamoMichio Yamamoto
    • Makoto ItagakiGohfu SuzukamoMichio Yamamoto
    • C07C200
    • C07C11/107B01J31/0202B01J31/0232B01J31/143B01J31/2404B01J2231/52B01J2531/847C07C2/36C07C2527/128C07C2531/02C07C2531/025C07C2531/04C07C2531/10C07C2531/14C07C2531/22C07C2531/24
    • There is disclosed a method for producing 2,3-dimethylbutene-1 and 2,3-dimethylbutene-2, which is characterized by the steps of (a) dimerizing propylene in a propylene-dimerization step using a nickel complex catalyst as described below as a propylene-dimerization catalyst having propylene-dimerization activity and DMB-1 selectivity, (b) rectifying the resulting reaction solution to obtain 2,3-dimethylbutene-1 as a distillate and a distillation residue containing 2,3-dimethylbutene-1 in a 2,3-dimethylbutene-1 distillation step, (c) allowing the distillation residue to contact with sulfuric acid, sulfonic acid or hetetopolyacid to isomerize 2,3-dimethylbutene-1 in said distillation residue into 2,3-dimethylbutene-2 in an isomerization step, and (d) rectifying the resulting isomerization reaction solution to obtain 2,3-dimethylbutene-2 in a 2,3-dimethylbutene-2 distillation step, wherein said nickel complex catalyst containing (A) at least one nickel compound and the like, (B) a trialkylaluminum, (C) a trivalent phosphorus compound, (D) a fluorinated isopropanol or a halogenated phenol (E) at least one sulfur compound selected from a sulfonic acid and a dialkylsulfuric acid.
    • 公开了2,3-二甲基丁烯-1和2,3-二甲基丁烯-2的制备方法,其特征在于以下步骤:(a)使用如下所述的镍络合物催化剂在丙烯二聚步骤中使丙烯二聚 具有丙烯二聚活性和DMB-1选择性的丙烯 - 二聚催化剂,(b)将所得反应溶液精馏,得到作为馏出物的2,3-二甲基丁烯-1和含有2,3-二甲基丁烯-1的蒸馏残余物 2,3-二甲基丁烯-1蒸馏步骤,(c)使蒸馏残余物与硫酸,磺酸或氢过氧酸接触,将所述蒸馏残余物中的2,3-二甲基丁烯-1异构化为2,3-二甲基丁烯-2 异构化步骤,和(d)在2,3-二甲基丁烯-2蒸馏步骤中精制所得异构化反应溶液得到2,3-二甲基丁烯-2,其中所述镍络合物催化剂含有(A)至少一种镍化合物和 (B)三烷基铝 m,(C)三价磷化合物,(D)氟化异丙醇或卤代苯酚(E)至少一种选自磺酸和二烷基硫酸的硫化合物。