Process for preparing ortho-chlorobenzaldehyde
    3.
    发明授权
    Process for preparing ortho-chlorobenzaldehyde 失效
    制备邻氯苯甲醛的方法

    公开(公告)号:US3624157A

    公开(公告)日:1971-11-30

    申请号:US3624157D

    申请日:1969-12-17

    CPC classification number: C07C45/80 C07C45/43 C07C45/81 C07C47/55

    Abstract: This invention discloses a process for preparing orthochlorobenzaldehyde which comprises chlorinating the side chains of a mixture of ortho- and para-chlorotoluene containing from about 50 to about 85 percent by weight of the orthoisomer in the liquid phase with chlorine gas until the ratio of orthochlorobenzal chloride to parachlorobenzal chloride in the reaction mixture is at least about 10 to 1 by weight, hydrolyzing the resulting mixture to the corresponding benzaldehyde and benzoic acids and thereafter recovering the orthochlorobenzaldehyde therefrom.

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