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    • 6. 发明授权
    • 1,7-Octadiene synthesis
    • 1,7-辛二烯合成
    • US4377719A
    • 1983-03-22
    • US969159
    • 1978-12-13
    • Charles U. Pittman, Jr.Ronald Hanes
    • Charles U. Pittman, Jr.Ronald Hanes
    • C07C2/74C07C6/00
    • C07C2/74C07C2531/04C07C2531/24
    • A process for preparing 1,7-octadiene by dimerizing butadiene in the presence of a catalytic amount of palladium acetate and a tertiary phosphine, a solvent in an amount sufficient to dissolve the catalyst, a strong base and formic acid, wherein: (a) the molar ratio of the strong base to the formic acid is 1:1-2, (b) the mole ratio of tertiary phosphine to palladium is at least 1, (c) the amount of strong base present is such that the pH of the reaction medium is from 7.5 to 10.5 and (d) the solvent is at least one member selected from the group consisting of aromatic hydrocarbons, lower alkyl substituted aromatic hydrocarbon, halogenated aromatic hydrocarbons, halogenated lower aliphatic hydrocarbons, nitriles, amides, dilower alkyl ethers, lower alkyl phenyl ethers, lower alkyl esters of lower alkanoic acids, ketones and lower alkanols.
    • 在催化量的乙酸钯和叔膦,溶剂量足以溶解催化剂的溶剂,强碱和甲酸的存在下,使丁二烯二聚制备1,7-辛二烯的方法,其中:(a) 强碱与甲酸的摩尔比为1:1-2,(b)叔膦与钯的摩尔比至少为1,(c)存在的强碱的量使得 反应介质为7.5〜10.5,(d)溶剂为选自芳香烃,低级烷基取代芳香烃,卤代芳香烃,卤代低级脂族烃,腈,酰胺,二氟烷基醚中的至少一种, 低级烷基苯基醚,低级链烷酸的低级烷基酯,酮和低级链烷醇。