Preparation of 3,3-bis-(4-dimethylaminophenyl)-6-dimethylaminophthalide
    1.
    发明授权
    Preparation of 3,3-bis-(4-dimethylaminophenyl)-6-dimethylaminophthalide 失效
    制备3,3-双 - (4-二甲基氨基苯基)-6-二甲基氨基苯酞

    公开(公告)号:US4233223A

    公开(公告)日:1980-11-11

    申请号:US64759

    申请日:1979-08-08

    申请人: Walter Seibert

    发明人: Walter Seibert

    CPC分类号: C07D307/885 C09B11/24

    摘要: Crystal violet lactone is prepared by oxidizing 2-(4,4'-bis-dimethylaminobenzhydryl)-5-dimethylaminobenzoic acid in aqueous alkaline solution by means of a water-soluble ferricyanide salt or in the presence of a ferricyanide.A very pure crystal violet lactone is obtained in high yield.

    摘要翻译: 通过水溶性铁氰化物盐或在铁氰化物存在下,在碱性水溶液中氧化2-(4,4'-双 - 二甲基氨基二苯甲基)-5-二甲基氨基苯甲酸来制备结晶紫内酯。 以高产率获得非常纯的结晶紫内酯。