Process for producing epsilon-caprolactone
    6.
    发明申请
    Process for producing epsilon-caprolactone 失效
    生产ε-己内酯的方法

    公开(公告)号:US20040087804A1

    公开(公告)日:2004-05-06

    申请号:US10688926

    申请日:2003-10-21

    CPC classification number: C07D315/00 B01D3/146

    Abstract: A process produces null-caprolactone by the oxidation of cyclohexanone by feeding a crude reaction mixture to a first distillation column; distilling off a first distillate containing low boiling components including unreacted cyclohexanone from the top of the first distillation column; recovering a first side-cut fraction containing unreacted cyclohexanone in a higher concentration than in the first distillate from an intermediate tray; recovering a first bottom liquid containing high boiling components including null-caprolactone from the bottom; introducing the first side-cut fraction to a second distillation column; recovering a second bottom liquid containing unreacted cyclohexanone from the bottom of the second distillation column; recycling the second bottom liquid into the raw material cyclohexanone; introducing the first bottom liquid to a third distillation column to thereby yield a third distillate containing null-caprolactone from the third distillation column.

    Abstract translation: 通过将粗反应混合物进料至第一蒸馏塔,通过环己酮的氧化产生ε-己内酯; 从第一蒸馏塔的顶部蒸馏出含有低沸点组分(包括未反应的环己酮)的第一馏出物; 从中间托盘回收含有比在第一馏出物中更高浓度的未反应的环己酮的第一侧馏分; 从底部回收含有高沸点组分(包括ε-己内酯)的第一底液; 将第一侧馏分引入第二蒸馏塔; 从第二蒸馏塔的底部回收含有未反应的环己酮的第二底液; 将第二底液再循环到原料环己酮中; 将第一底液引入第三蒸馏塔,从而从第三蒸馏塔得到含有ε-己内酯的第三馏出物。

    Method of producing optically active lactone compound and complex used in the method
    7.
    发明申请
    Method of producing optically active lactone compound and complex used in the method 失效
    在该方法中使用的光学活性内酯化合物和络合物的制造方法

    公开(公告)号:US20040010152A1

    公开(公告)日:2004-01-15

    申请号:US10405603

    申请日:2003-04-03

    CPC classification number: C07D315/00 C07F7/003

    Abstract: An optically active lactone compound is produced by using a Zr(salen) complex of the following formula (I) or its enantiomer as a catalyst and subjecting a cyclic ketone compound to a Baeyer-Villiger reaction with at least one oxidizer selected from hydrogen peroxide, aqueous hydrogen peroxide and urea-hydrogen peroxide adduct in a solvent: 1 wherein Ar1 is an aryl group having a carbon number of 10 to 16 and Y is a phenoxy group or an alkoxy group having a carbon number of 1 to 10.

    Abstract translation: 通过使用下述式(I)的Zr(salen)配合物或其对映异构体作为催化剂并使环酮化合物与Baeyer-Villiger反应与至少一种选自过氧化氢的氧化剂反应来制备光学活性的内酯化合物, 过氧化氢水溶液和脲 - 过氧化氢加合物,其中Ar 1是碳原子数为10〜16的芳基,Y为苯氧基或碳数为1〜10的烷氧基。

    Processes for producing epsilon caprolactones and/or hydrates and/or esters thereof

    公开(公告)号:US20010053858A1

    公开(公告)日:2001-12-20

    申请号:US09729408

    申请日:2000-12-04

    CPC classification number: C07D315/00 C07C67/38 Y02P20/582 C07C69/675

    Abstract: This invention relates in part to processes for producing one or more substituted or unsubstituted epsilon caprolactones and/or hydrates and/or esters thereof which comprise subjecting one or more substituted or unsubstituted penten-1-ols to carbonylation in the presence of a carbonylation catalyst, e.g., a metal-organophosphorus ligand complex catalyst, to produce said one or more substituted or unsubstituted epsilon caprolactones and/or hydrates and/or esters thereof. The substituted and unsubstituted epsilon caprolactones and/or hydrates and/or esters thereof produced by the processes of this invention can undergo further reaction(s) to afford desired derivatives thereof, e.g., epsilon caprolactam. This invention also relates in part to reaction mixtures containing one or more substituted or unsubstituted epsilon caprolactones and/or hydrates and/or esters thereof as principal product(s) of reaction.

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