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    • 136. 发明授权
    • Preparation of carboxylic acids by carbonylation of alcohols
    • 通过羰基化醇制备羧酸
    • US4351953A
    • 1982-09-28
    • US247744
    • 1981-03-26
    • Jean Gauthier-LafayeRobert Perron
    • Jean Gauthier-LafayeRobert Perron
    • B01J27/00B01J31/00C07C51/00C07C51/12C07C53/00C07C53/08C07C67/00C07C53/134C07C57/30
    • C07C51/12
    • Carboxylic acids having the structural formula R.sup.1 COOH, wherein R.sup.1 is a linear, branched or cyclic chain alkyl radical of from 1 to 6 carbon atoms or a .PHI.--C.sub.n H.sub.2n -- radical wherein .PHI. is phenyl and 1.ltoreq.n.ltoreq.6, are prepared by carbonylating an alcohol having the formula R.sup.1 --OH with carbon monoxide in liquid phase, in the presence of a catalytically effective amount of nickel and an alkyl or acyl halide promoter therefor, at a temperature of at least about 120.degree. C. and under a total pressure of less than 200 bars, and said carbonylation being carried out in the presence of at least one chromium salt in which the chromium is in a state of oxidation (p) of greater than zero (p>0), and in an initial carboxylic acid reaction medium having the formula R.sup.2 --COOH, wherein R.sup.2 is defined as was R.sup.1 above, and further wherein R.sup.1 and R.sup.2 may be the same or different.
    • 具有结构式为R 1 COOH的羧酸,其中R 1是具有1至6个碳原子的直链,支链或环状链烷基或PHI-C n H 2n - ,其中PHI是苯基且1≤n≤6是 在催化有效量的镍和其烷基或酰卤促进剂的存在下,在至少约120℃的温度和下面的温度下,通过羰基化具有式R1-OH的醇与一氧化碳在液相中羰基化来制备 总压力小于200巴,所述羰基化在至少一种铬(其中铬处于大于零(p> 0)的状态下)的铬盐的存在下进行,并且在 具有式R2-COOH的初始羧酸反应介质,其中R2定义为R1以上,并且其中R1和R2可以相同或不同。