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    • 5. 发明授权
    • Process for the preparation of a carboxylic acid
    • 制备羧酸的方法
    • US06380426B1
    • 2002-04-30
    • US09962601
    • 2001-09-26
    • Ashutosh A KelkarSunil S TondeRaghunath V Chaudhari
    • Ashutosh A KelkarSunil S TondeRaghunath V Chaudhari
    • C07C5112
    • C07C51/12C07C53/122C07C53/08
    • The present invention relates to a process for the preparation of a carboxylic acid by carbonylating the corresponding alcohol in carbon monoxide atmosphere and in the presence of water, a solvent, a palladium catalyst and a promoter system consisting of an organic or inorganic halide and an organic sulphonic acid, at a temperature in the range of 50-250° C., at a pressure in the range of 50-2000 psig for 1 to 10 hours, the concentration of the catalyst being one mole of catalyst per every 50-50000 moles of the alcohol, the amount of the organic or inorganic halide being in the range of 5-500 moles per mole of the catalyst, and the amount of the organic sulphonic acid being in the range of 5-500 moles per mole of the catalyst, collecting the resulting product.
    • 本发明涉及通过在一氧化碳气氛中和在水,溶剂,钯催化剂和由有机或无机卤化物和有机物组成的助催化剂体系的存在下羰基化相应的醇来制备羧酸的方法 磺酸,在50-250℃的温度范围内,在50-2000psig的压力下进行1至10小时,每50-50000摩尔催化剂的催化剂浓度为1摩尔 的醇,有机或无机卤化物的量在每摩尔催化剂5-500摩尔的范围内,有机磺酸的量在每摩尔催化剂5-500摩尔的范围内, 收集产生的产品。