Method for producing aliphatic carboxylic acids from aldehydes
    1.
    发明授权
    Method for producing aliphatic carboxylic acids from aldehydes 失效
    从醛生产脂肪族羧酸的方法

    公开(公告)号:US06696582B2

    公开(公告)日:2004-02-24

    申请号:US10204286

    申请日:2002-09-10

    IPC分类号: C07C5116

    摘要: The invention relates to a method for producing aliphatic carboxylic acids from aldehydes by means of oxidation with oxygen or gases containing oxygen. This novel process is carried out in at least two stages at different temperatures, preferably in the absence of catalysts.

    摘要翻译: 本发明涉及通过氧气或含氧气体从醛制备脂族羧酸的方法。 该新方法在不同温度下进行至少两个阶段,优选在不存在催化剂的情况下进行。

    Preparation of methyltris(m-sulfonatophenyl) phosphonium iodide
trisodium salt and use thereof in carbonylation reactions to prepare
carboxylic acids and/or their esters
    6.
    发明授权
    Preparation of methyltris(m-sulfonatophenyl) phosphonium iodide trisodium salt and use thereof in carbonylation reactions to prepare carboxylic acids and/or their esters 失效
    制备甲基三(间磺苯基)碘化鏻三钠盐及其在羰基化反应中的用途,以制备羧酸和/或其酯

    公开(公告)号:US5403954A

    公开(公告)日:1995-04-04

    申请号:US177909

    申请日:1994-01-06

    IPC分类号: C07C51/12 C07C67/36 C07F9/54

    摘要: In a process for preparing methyltris(m-sulfonatophenyl)phosphonium iodide trisodium salt, the sodium salt of trisulfonated triphenylphosphine and methanol are introduced as the initial charge, a solution of methyl iodide in methanol is added dropwise at elevated temperature, and after an additional reaction time the reaction product is evaporated to dryness in vacuo.Methyltris(m-sulfonatophenyl)phosphonium iodide trisodium salt can be used to prepare carboxylic acids and/or their esters by carbonylation of saturated aliphatic alcohols having from 1 to 20 carbon atoms or their halo, ester or ether derivatives over a rhodium catalyst in the presence of water and methyl iodide under a CO partial pressure of from 0.3 to 200 bar at a temperature of from 100.degree. to 240.degree. C., provided methyltris(m-sulfonatophenyl)phosphonium iodide trisodium salt and carboxylic acid are added to the liquid phase prior to carbonylation.

    摘要翻译: 在制备甲基三(m-磺化苯基)碘化鏻三钠盐的方法中,引入三磺化三苯基膦和甲醇的钠盐作为初始电荷,在升高的温度下滴加甲基碘在甲醇中的溶液,并且在另外的反应 将反应产物真空蒸发至干。 甲基三(间磺酸苯基)碘化鏻三钠盐可用于通过羰基化具有1至20个碳原子的饱和脂族醇或其卤代,酯或醚衍生物在铑催化剂的存在下制备羧酸和/或其酯 的水和甲基碘在温度为100〜240℃的CO分压下,在0.3〜200巴的温度下,将碘化三甲基三(m-磺苯基)鏻三钠盐和羧酸加入到液相中 到羰基化。