Preparation of caprolactam
    3.
    发明授权
    Preparation of caprolactam 失效
    己内酰胺的制备

    公开(公告)号:US06204379B1

    公开(公告)日:2001-03-20

    申请号:US09269875

    申请日:1999-07-27

    IPC分类号: C07D20108

    CPC分类号: C07D201/08 Y02P20/52

    摘要: The present invention concerns the aminomethylation of pentenoic acid derivatives, by reaction with carbon monoxide, hydrogen and ammonia, for preparing caprolactam. More precisely, it is directed to a method for preparing caprolactam wherein the aminomethylation of pentenoic acid derivatives is carried out by reaction with carbon monoxide, hydrogen, and ammonia, at a temperature higher than 30° C. and in the presence of a catalyst with a base of at least one metal of Group VIII of the Periodic Table.

    摘要翻译: 本发明涉及通过与一氧化碳,氢和氨的反应制备己内酰胺的戊烯酸衍生物的氨基甲基化。 更精确地,涉及一种制备己内酰胺的方法,其中戊烯酸衍生物的氨基甲基化通过与一氧化碳,氢气和氨在高于30℃的温度下反应并在催化剂存在下进行, 元素周期表第Ⅷ族至少一种金属的碱。

    Method for etherifying a benzyl alcohol, resulting products and applications
    7.
    发明授权
    Method for etherifying a benzyl alcohol, resulting products and applications 失效
    醚化苄醇的方法,得到的产品和应用

    公开(公告)号:US06362378B1

    公开(公告)日:2002-03-26

    申请号:US09462432

    申请日:2000-03-14

    IPC分类号: C07C4109

    摘要: The present invention relates to a process for etherification of a benzyl type alcohol, to the products obtained and to their applications, in particular in the perfumery field. The etherification process of the invention consists of reacting a benzyl type alcohol with another alcohol in the presence of a catalyst, characterized in that the etherification reaction is carried out in the presence of an effective quantity of a zeolite.

    摘要翻译: 本发明涉及一种苄基醇的醚化方法,所得到的产物及其应用,特别是在香料领域中。 本发明的醚化方法包括在催化剂存在下使苄基型醇与另一种醇反应,其特征在于醚化反应在有效量的沸石存在下进行。

    Method for preparing a benzylic-type ether
    9.
    发明授权
    Method for preparing a benzylic-type ether 失效
    苄型醚的制备方法

    公开(公告)号:US06608232B1

    公开(公告)日:2003-08-19

    申请号:US09869743

    申请日:2001-07-03

    IPC分类号: C07C4109

    摘要: The invention concerns a method for preparing a benzylic-type ether from an aromatic compound. The inventive method for preparing a benzylic-type ether from an aromatic compound is characterised in that it consists in: in a first step, acylating an aromatic compound by reacting said aromatic compound with an acylating agent, in the presence of an efficient amount of zeolite or a Friedel-Crafts catalyst leading to a ketonic compound; in a second step, reducing the carbonyl group into carbinol leading to a benzylic alcohol; in a third step, etherifying the hydroxyl group, by reacting the benzylic alcohol with another alcohol, in the presence of an efficient amount of zeolite.

    摘要翻译: 本发明涉及一种由芳族化合物制备苄型醚的方法。 从芳族化合物制备苄型醚的本发明方法的特征在于:在第一步中,通过使所述芳族化合物与酰化剂反应,在有效量的沸石 或通过引入酮化合物的Friedel-Crafts催化剂; 在第二步中,将羰基还原成苄醇,得到苄醇; 在第三步中,通过使苄醇与另一种醇反应,在有效量的沸石存在下,醚化羟基。

    Aromatic thioether acylation method
    10.
    发明授权
    Aromatic thioether acylation method 失效
    芳香硫醚酰化法

    公开(公告)号:US6121496A

    公开(公告)日:2000-09-19

    申请号:US68625

    申请日:1998-08-03

    CPC分类号: C07C319/20

    摘要: The present invention relates to a process for the acylation of an aromatic thioether. In its preferred variant, the invention resides in a process for the condensation of acetic anhydride or acetyl chloride with thioanisole. The process for the acylation of an aromatic thioether according to the invention is characterised in that it consists in reacting said thioether with an acylating agent chosen from the group formed by the halides of carboxylic acids and the anhydrides of carboxylic acids, in the presence of an effective quantity of an acid zeolite.

    摘要翻译: PCT No.PCT / FR96 / 01763 Sec。 371日期1998年8月3日 102(e)1998年8月3日PCT PCT 1996年11月8日PCT公布。 出版物WO97 / 17324 PCT 日期:1997年5月15日本发明涉及一种酰化芳族硫醚的方法。 在其优选的变体中,本发明在于使乙酸酐或乙酰氯与硫代苯甲醚缩合的方法。 根据本发明的酰化芳族硫醚的方法的特征在于它使所述硫醚与酰化剂反应,所述酰化剂选自由羧酸的卤化物和羧酸的酸酐形成的基团, 有效量的酸性沸石。