Preparation of carboxylic acids or related esters by carbonylation in
the presence of iridium
    2.
    发明授权
    Preparation of carboxylic acids or related esters by carbonylation in the presence of iridium 失效
    在铱存在下通过羰基化制备羧酸或相关酯

    公开(公告)号:US5883289A

    公开(公告)日:1999-03-16

    申请号:US809706

    申请日:1997-05-14

    CPC分类号: C07C51/12 C07C67/36

    摘要: A method for preparing carboxylic acids including (n+1) carbon atoms, or the related esters, by liquid phase carbonylation of an alcohol including (n) carbon atoms, in the presence of a uniform catalytic system based on at least one iridium compound and at least one halogenated promoter. In particular, the method is characterised in that the content of ester related to said carboxylic acid and alcohol is kept between 15 and 35% in the medium during the reaction, while the halogenated promoter content is kept between 10 and 20%, and the partial carbon monoxide pressure is 40-200 bar. Said method enables both the rate of carbonylation and the acetic acid selectivity to be increased.

    摘要翻译: PCT No.PCT / FR95 / 01283 Sec。 371日期1997年5月14日 102(e)日期1997年5月14日PCT提交1995年10月4日PCT公布。 公开号WO96 / 11179 日期:1996年4月18日在含有(n)碳原子的醇的液相羰基化的基础上,在基于 至少一种铱化合物和至少一种卤化促进剂。 特别地,该方法的特征在于,在反应过程中,介质中与所述羧酸和醇相关的酯含量保持在15至35%之间,而卤代促进剂含量保持在10至20%之间,部分 一氧化碳压力为40-200巴。 所述方法能够提高羰基化速率和乙酸选择性。

    Process for producing an iridium solution and use of same as catalyst
    4.
    发明授权
    Process for producing an iridium solution and use of same as catalyst 失效
    铱溶液的制造方法及其与催化剂的使用

    公开(公告)号:US5847204A

    公开(公告)日:1998-12-08

    申请号:US663096

    申请日:1996-09-27

    申请人: Dominique Nobel

    发明人: Dominique Nobel

    CPC分类号: C07C51/12 C07C67/36

    摘要: An iridium-based solution is prepared by contacting components in a liquid phase containing (a) a carbonylated iridium compound, (b) hydriodic acid, a precursor of such an acid, or mixture thereof, and (c) a solvent; under a total pressure of between 1 and 10 bar at a temperature not greater than the boiling temperature of the solvent under conditions in which the components are brought into contact. The iridium-based solution can be used as a catalyst for carrying out carbonylation, hydroformylation or isomerization reactions.

    摘要翻译: PCT No.PCT / FR94 / 01542 Sec。 371日期1996年9月27日第 102(e)日期1996年9月27日PCT 1994年12月28日PCT公布。 公开号WO95 / 17963 日期:1995年7月6日,铱基溶液是通过使含有(a)羰基化铱化合物,(b)氢碘酸,这种酸的前体或其混合物的液相的组分接触而制备的,(c) 溶剂; 在不超过溶剂沸点温度的温度下,在组分接触的条件下,在1至10巴之间的总压力下进行。 铱基溶液可用作进行羰基化,加氢甲酰化或异构化反应的催化剂。

    Para-hydroxyalkylation of hydroxylated aromatic compounds
    5.
    发明授权
    Para-hydroxyalkylation of hydroxylated aromatic compounds 失效
    羟基化芳族化合物的对羟基烷基化

    公开(公告)号:US5430183A

    公开(公告)日:1995-07-04

    申请号:US89308

    申请日:1993-07-12

    申请人: Dominique Nobel

    发明人: Dominique Nobel

    CPC分类号: C07C51/367

    摘要: Hydroxylated aromatic compounds devoid of substituents in the para-position to the hydroxyl group thereof are para-hydroxyalkylated, e.g., into optionally substituted p-hydroxymandelic acid compounds, more particularly p-hydroxymandelic acid and 3-methoxy-p-hydroxymandelic acid, by condensing same with an organic carbonyl compound in the presence of a quaternary ammonium hydroxide.

    摘要翻译: 在其羟基对位没有取代基的羟基化芳族化合物是对羟基烷基化的,例如通过冷凝而成为任选取代的对羟基扁桃酸化合物,更特别是对羟基扁桃酸和3-甲氧基对羟基扁桃酸 与有机羰基化合物在氢氧化季铵存在下相同。