Preparation of 3,3'- or 3,4'-diaminobenzophenone
    119.
    发明专利
    Preparation of 3,3'- or 3,4'-diaminobenzophenone 失效
    3,3'-或3,4'-二氨基苯并噻吩的制备

    公开(公告)号:JPS59172441A

    公开(公告)日:1984-09-29

    申请号:JP4709783

    申请日:1983-03-23

    CPC classification number: C07C201/14 C07C221/00 C07C205/45 C07C225/22

    Abstract: PURPOSE: To obtain the titled compound industrially advantageously, by using 3- or 4-nitrobenzoyl chloride and chlorobenzene as starting substances, subjecting them to three-stage processes of Friedel-Crafts reaction, nitration reaction and reduction, and dehydrochlorination.
    CONSTITUTION: 3- or 4-Nitrobenzoyl chloride and chlorobenzene are subjected to Friedel-Crafts reaction in the presence of a Lewis acid catalyst to give a mixture of isomers of chloronitrobenzophenone. This compound without purification is nitrated to give a mixture of chloro-dinitrobenzophenone. This compound is reduced catalytically and dechlorinated in the presence of a reductive catalyst and a dehydrochlorinating agent, to give 3,3'- or 3,4'-diaminobenzophenone useful as a monomer for heat-resistant high polymers, intermediate for agricultural chemicals, drugs, etc. in high yield in high purity and industrially inexpensively.
    COPYRIGHT: (C)1984,JPO&Japio

    Abstract translation: 目的:通过使用3-或4-硝基苯甲酰氯和氯苯作为起始物质,在工业上有利地得到标题化合物,进行Friedel-Crafts反应,硝化反应和还原的三步法和脱氯化氢。 构成:在路易斯酸催化剂存在下,将3-或4-硝基苯甲酰氯和氯苯进行Friedel-Crafts反应,得到氯二硝基苯甲酮异构体的混合物。 将不经纯化的该化合物硝化,得到氯二硝基二苯甲酮的混合物。 该化合物在还原催化剂和脱氯化氢剂的存在下催化还原脱氯,得到3,3'-或3,4'-二氨基二苯甲酮,其可用作耐高温聚合物的单体,农药中间体,药物 等,高纯度,工业上廉价。

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