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123 条记录 (耗时 0.014 秒)

    Continuous production of cyclohexene from cyclohexyl esters
    12.
    发明授权
    Continuous production of cyclohexene from cyclohexyl esters 失效
    从环己基酯连续制备环己烯

    公开(公告)号：US5382740A

    公开(公告)日：1995-01-17

    申请号：US993053

    申请日：1992-12-18

    申请人： Rolf Pinkos ,  Rolf Fischer ,  Roman Dostalek

    发明人： Rolf Pinkos ,  Rolf Fischer ,  Roman Dostalek

    IPC分类号： C07B61/00 ,  C07C1/213 ,  C07C13/20

    CPC分类号： C07C1/213 ,  C07C2101/16 ,  C07C2529/06 ,  C07C2531/08

    摘要： A process for the continuous production of cyclohexene from a cyclohexyl ester of a carboxylic acid having 1 or 2 carbon atoms, which comprises the following steps:a) heating a cyclohexyl ester of a carboxylic acid having 1 or 2 carbon atoms in the presence of an acid catalyst with the formation of cyclohexene and a carboxylic acid having 1 or 2 carbon atoms;b) removing, by distillation, cyclohexene and carboxylic acid having 1 or 2 carbon atoms from the reaction mixture from stage a) at the same rate as they are formed;c) adding a cyclohexyl ester of a carboxylic acid having 1 or 2 carbon atoms to stage a) at the rate cyclohexene and carboxylic acid are distilled off; andd) separating the mixture comprising cyclohexene and carboxylic acid having 1 or 2 carbon atoms coming from stage b).

    摘要翻译： 一种由具有1或2个碳原子的羧酸的环己酯连续制备环己烯的方法，包括以下步骤：a）在存在下加成具有1或2个碳原子的羧酸的环己酯， 形成环己烯和具有1或2个碳原子的羧酸的酸催化剂; b）通过蒸馏从与所形成的相同速率从步骤a）的反应混合物中除去具有1或2个碳原子的环己烯和羧酸; c）将a）具有1或2个碳原子的羧酸的环己基酯以环己烯和羧酸的速率蒸馏出来; 和d）从步骤b）分离包含环己烯和具有1或2个碳原子的羧酸的混合物。

    Ester derivatives of lower alkene oligomers
    13.
    发明授权
    Ester derivatives of lower alkene oligomers 失效
    低级烯烃低聚物的酯衍生物

    公开(公告)号：US5304675A

    公开(公告)日：1994-04-19

    申请号：US625404

    申请日：1990-12-11

    申请人： Catherine S. H. Chen

    发明人： Catherine S. H. Chen

    IPC分类号： C07C1/213 ,  C07C11/02 ,  C07C67/02

    CPC分类号： C07C1/213 ,  C07C11/02

    摘要： An ester product consisting essentially of the acylation product of a mixture of near linear aliphatic 1-alkanols, said alkanols containing six to twenty carbon atoms and having a methyl to methylene branch ratio less than 0.25. These novel esters can be further converted to valuable 1-alkenes by pyrrolysis. In the preferred embodiments, esters are derived by acylation of C.sub.9 -C12 1-alkanols having a methyl to methylene branch ratio less than 0.18.In the preferred method of synthesizing the esters, acylation is carried out using aliphatic carboxylic acid, anhydride, halide or ester as acylating agent, wherein the agent has 2 to 20 carbon atoms. For instance, the acylating agent may comprise acetic anhydride and to produce acetate esters.

    摘要翻译： 基本上由近线性脂族1-链烷醇的混合物的酰化产物，所述链烷醇含有6至20个碳原子并具有小于0.25的甲基 - 亚甲基分支比例的酯产物。 这些新型酯可以通过吡咯分解进一步转化为有价值的1-烯烃。 在优选的实施方案中，通过酰化甲基至亚甲基分支比小于0.18的C 9 -C 12 1-链烷醇衍生酯。 在合成酯的优选方法中，使用脂族羧酸，酸酐，卤化物或酯作为酰化剂进行酰化，其中该试剂具有2至20个碳原子。 例如，酰化剂可以包含乙酸酐并产生乙酸酯。