PROCESS FOR OBTAINING SUBSTANTIALLY ALDEHYDE-FREE KETONE PRODUCTS
    3.
    发明申请
    PROCESS FOR OBTAINING SUBSTANTIALLY ALDEHYDE-FREE KETONE PRODUCTS 审中-公开
    获得无碱性无卤酮产品的方法

    公开(公告)号:WO1990000536A1

    公开(公告)日:1990-01-25

    申请号:PCT/US1989002945

    申请日:1989-07-06

    CPC classification number: C07C45/34 C07C45/80 C07C45/82 C07C45/85

    Abstract: Tischtschenko condensation of aldehydes is used to remove aldehydes from dry ketone-containing streams. The Tischtschenko condensation is used to condense the aldehydes into esters whose boiling points are significantly different than the ketones, greatly simplifying the separation of the esters from the ketones. An organic extraction step is used to obtain a substantially dry ketone containing stream. One particularly preferred class of extraction solvents is selected from the group consisting of butane, pentane, hexane, heptane, octane, nonane, decane and mixtures thereof. In particularly preferred embodiments, the Tischtschenko reaction is used in the context of aqueous-phase catalyzed olefin oxidation to ketones. The aldehyde to ester condensation permits easy and efficient removal of the aldehyde analogs of the desired ketones.

    Abstract translation: 使用Tischtschenko缩醛醛从干燥含酮流中除去醛。 Tischtschenko缩合用于将醛缩合成酯,其沸点与酮显着不同,极大地简化了酯与酮的分离。 使用有机萃取步骤获得基本上干燥的含酮流。 一类特别优选的萃取溶剂选自丁烷,戊烷,己烷,庚烷,辛烷,壬烷,癸烷及其混合物。 在特别优选的实施方案中,Tischtschenko反应在水相催化的烯烃氧化成酮的情况下使用。 醛与酯缩合允许容易且有效地除去所需酮的醛类似物。

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