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    • 4. 发明公开
    • PROCESS FOR PRODUCTION OF DICARBOXYLIC ACIDS
    • VERFAHREN ZUR HERSTELLUNG VONDICARBONSÄUREN
    • EP1350786A4
    • 2005-12-14
    • EP01270515
    • 2001-12-07
    • DAICEL CHEM
    • ISHII YASUTAKAKAJIKAWA YASUTERU
    • C07C51/31C07B61/00C07C55/14C07C55/21
    • C07C51/313Y02P20/55C07C55/02C07C55/14C07C55/21
    • A process for producing dicarboxylic acids by oxidative cleavage of cycloalkanes with oxygen, characterized in that the oxidative cleavage is conducted in the presence of a catalyst constituted of both an imido compound having a cyclic imide skeleton represented by the general formula (I): (I) [wherein X is oxygen or OR (wherein R is hydrogen or a hydroxyl-protecting group)] and a metal compound at a temperature of 80 °C or above in a reaction system having a cycloalkane concentration of 21 wt% or above. The imido compound is N-hydroxyphthalimide or the like, and is used in an amount of about 0.000001 to 0.01 mol per mol of the cycloalkane. In producing dicalboxylic acids by catalytic oxygenation of cycloalkanes, this process attains high space time yield even with a reduced amount of a catalyst.
    • 一种通过用氧气氧化裂解环烷烃生产二羧酸的方法,其特征在于氧化裂解是在由通式(I)表示的具有环状酰亚胺骨架的亚氨基化合物构成的催化剂存在下进行的:(I )在环烷烃浓度为21wt%或更高的反应体系中,其中X是氧或OR(其中R是氢或羟基保护基)]和金属化合物在80℃或更高的温度下反应。 酰亚胺化合物是N-羟基邻苯二甲酰亚胺等,其用量为每摩尔环烷烃约0.000001-0.01摩尔。 在通过环烷烃的催化氧化生产二羧酸时,该方法即使在催化剂量减少的情况下也获得高时空产率。