Process for preparing aliphatic monocarboxylic acid ester of
hydroxymethyl-substituted monoaromatic compound
    22.
    发明授权
    Process for preparing aliphatic monocarboxylic acid ester of hydroxymethyl-substituted monoaromatic compound 失效
    制备羟甲基取代的单芳族化合物的脂族一元羧酸酯的方法

    公开(公告)号:US4224456A

    公开(公告)日:1980-09-23

    申请号:US908732

    申请日:1978-05-23

    CPC分类号: C07C67/035

    摘要: Disclosed is a vapor phase catalytic oxidation process for preparing an aliphatic carboxylic acid ester of a monoaromatic compound having 1 to 2 hydroxymethyl substituents, such as benzyl acetate, p-methylbenzyl acetate, p-xylylenediacetate, benzyl propionate and benzyl butyrate. A gaseous feed comprised of a benzene compound having 1 to 2 methyl substituents, an aliphatic monocarboxylic acid having 2 to 4 carbon atoms and molecular oxygen is contacted with an improved catalyst. The metal ingredients of the catalyst consist essentially of (a) palladium, (b) arsenic and (c) at least one metal selected from alkali metals and alkali earth metals, and the atomic ratio of palladium:arsenic:the alkali or alkali earth metal is 1:0.05-4:0.1-10.

    摘要翻译: 公开了一种用于制备具有1至2个羟甲基取代基的单芳族化合物的脂肪族羧酸酯的气相催化氧化方法,例如乙酸苄酯,乙酸对甲基苄酯,对二甲苯基二乙酸酯,丙酸苄酯和丁酸苄酯。 由具有1至2个甲基取代基的苯化合物,具有2至4个碳原子的脂族单羧酸和分子氧组成的气态进料与改进的催化剂接触。 催化剂的金属成分基本上由(a)钯,(b)砷和(c)至少一种选自碱金属和碱土金属的金属,钯:砷的原子比:碱金属或碱土金属 为1:0.05-4:0.1-10。