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    A PROCESS FOR PREPARING 2,5,6-TRIMETHYL-2-CYCLOHEXEN-1-ONE
    1.
    发明专利
    A PROCESS FOR PREPARING 2,5,6-TRIMETHYL-2-CYCLOHEXEN-1-ONE 未知

    公开(公告)号：CA2263625A1

    公开(公告)日：1999-09-12

    申请号：CA2263625

    申请日：1999-03-11

    Applicant: STROEZEL MANFRED ,  RUFF DETLEF ,  BURST WOLFRAM ,  KAISER WULF

    Inventor： STROEZEL MANFRED ,  RUFF DETLEF ,  BURST WOLFRAM ,  KAISER WULF

    IPC: C07C45/72 ,  C07C45/74 ,  C07C49/603

    Abstract: A process for preparing 2,5,6-trimethyl-2-cyclohexen-1-one by reacting diethyl ketone with crotonaldehyde or a compound which is converted under the chosen reaction conditions into crotonaldehyde, in the presence of basic agents at elevated temperature, which comprises a) simultaneously pumping one mole of crotonaldehyde or one mole of a compound which is converted under the reaction conditions into crotonaldehyde, about 5 to 30 moles of diethyl ketone and the aqueous solution or suspension of a strong base, through separate lines or at least partly in the form of a suitable mixture, continuously into a pressure vessel, which is heated where appropriate and which ensures vigorous mixing, in such a way that b) the reaction temperature is between 150.degree.C and 350.degree.C, and the average residence time in the pressure vessel is only about 0.1 second to 20 minutes.

    IMPROVED PROCESS FOR PRODUCING IONONES, ESPECIALLY 'beta'-IONONES
    2.
    发明申请
    IMPROVED PROCESS FOR PRODUCING IONONES, ESPECIALLY 'beta'-IONONES 审中-公开
    改进过程，以紫罗兰酮的筹备，尤其公测紫罗兰酮

    公开(公告)号：WO1997043254A1

    公开(公告)日：1997-11-20

    申请号：PCT/EP1997002249

    申请日：1997-05-02

    Applicant: BASF AKTIENGESELLSCHAFT ,  RHEUDE, Udo ,  HÖRCHER, Ulrich ,  WELLER, Dietmar ,  STROEZEL, Manfred

    Inventor： BASF AKTIENGESELLSCHAFT

    IPC: C07C403/16

    CPC classification number: C07C403/16 ,  C07C2601/16

    Abstract: A process for the continuous production of alpha and/or beta -ionones or homologous compounds by means of concentrated sulphuric acid at temperatures of 20 to 90 DEG C in the presence of organic solvents or diluents with cooling, and the subsequent halting of the reaction by the hydrolysis of the reaction mixtures with water or dilute sulphuric acid, in which the cyclization of the pseudo-ionones and the subsequent hydrolysis of the reaction mixture is performed in a practically adiabatic reaction in one or more successive reaction mixing pump(s) consisting of a rotational symetrical mixing chamber formed by a peripheral wall and two faces and driven mixing rotor of a material unaffected by sulphuric acid, where the mixing chamber has at least one inlet for each component and an outlet for the reaction mixture and annular chanels in fluid communication with each other in the faces, and the heat of reaction of both reactions is partly or fully evacuated with the aid of a downstream heat exchanger.

    Abstract translation: 和/或β-芷香酮或同系化合物通过在20的温度下的浓硫酸的装置至90℃，在有机溶剂或稀释剂与冷却的存在和由通过与水或反应混合物的水解反应的后续终止 - 一种用于连续生产的α过程 稀硫酸，其特征在于，它执行pseudoionones两者的环化和在每种情况下将反应混合物的随后的水解在一个或多个串联连接的反应混合泵（一个或多个）几乎绝热反应，基本上由圆周壁中的一个和两个 端壁形成旋转对称的混合室和一个旋转驱动混合在其中从schwefelsäureinertem材料的转子，其特征在于，所述混合室的至少一个入口孔的每个组件，和一个出口开口用于Reaktionsgem ICA和具有在端壁相互连接的流体环形通道，以及一个或完全由下游热交换器部分的装置消散在每种情况下两个反应的反应热。

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