Process for the preparation of indoles
    2.
    发明公开
    Process for the preparation of indoles 失效
    制备吲哚的方法

    公开(公告)号:EP0169436A1

    公开(公告)日:1986-01-29

    申请号:EP85108534.0

    申请日:1985-07-09

    IPC分类号: C07D209/08

    CPC分类号: C07D209/08 Y02P20/582

    摘要: A process for preparing indoles in high yield by reacting anilines and 1.2-glycols in a liquid phase in the presence of a cadmium bromide or idoide/potassium bromide or iodide catalyst. The used catalyst can be easily recovered and when reused, exhibits excellent performance.

    摘要翻译: 在溴化镉或碘化物/溴化钾或碘化物催化剂存在下,通过使苯胺和1,2-二醇在液相中反应来高产率地制备吲哚的方法。 使用过的催化剂可以很容易地回收,当重复使用时,表现出优异的性能。

    Process for preparing beta-acyloxypropionaldehyde
    5.
    发明公开
    Process for preparing beta-acyloxypropionaldehyde 失效
    Herstellungsverfahren vonβ-Acyloxyproprontdehyd。

    公开(公告)号:EP0353707A2

    公开(公告)日:1990-02-07

    申请号:EP89114181.4

    申请日:1989-08-01

    IPC分类号: C07C69/145 C07C67/04

    摘要: An improved process for preparing a β-acyloxy­propionaldehyde by reacting acrolein and a carboxylic acid is disclosed, in which the reaction is in the presence of calcium chloride and/or calcium bromide as a catalyst. The catalyst is very cheap and attains improved conversion and improved selectivity.

    摘要翻译: 公开了通过丙烯醛和羧酸反应制备β-酰氧基丙醛的改进方法,其中反应在氯化钙和/或溴化钙作为催化剂存在下进行。 该催化剂非常便宜并且获得改进的转化率和改善的选择性。