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123 条记录 (耗时 0.014 秒)

    Method for converting unsaturated compound having functional group
    61.
    发明授权
    Method for converting unsaturated compound having functional group 失效
    用于转化具有官能团的不饱和化合物的方法

    公开(公告)号：US4217299A

    公开(公告)日：1980-08-12

    申请号：US658749

    申请日：1976-02-17

    申请人： Ryuichi Nakamura ,  Seiji Fukuhara ,  Shuichi Matsumoto ,  Koei Komatsu

    发明人： Ryuichi Nakamura ,  Seiji Fukuhara ,  Shuichi Matsumoto ,  Koei Komatsu

    IPC分类号： C07C1/213 ,  C07F7/18 ,  C07C121/30 ,  C07C120/00 ,  C07C121/48 ,  C07C121/70

    CPC分类号： C07C1/213 ,  C07C255/00 ,  C07C45/68 ,  C07C67/00 ,  C07C67/475 ,  C07F7/1804 ,  C07C2527/10 ,  C07C2527/132 ,  C07C2531/02 ,  C07C2531/14 ,  C07C2531/20

    摘要： A method for the conversion of an unsaturated compound having a functional group, characterized by contacting [1] at least one compound selected from the group consisting of carboxylic acid esters, nitriles, ketones, amides, and ethers and having a carbon-to-carbon double bond and no unsaturation at the position conjugate to said double bond, or a mixture of said compound [1] and [2] at least one compound selected from the group consisting of ethylenically unsaturated compounds having a carbon-to-carbon double bond and neither unsaturation at the position conjugate to said double bond nor a functional group, with a catalyst system consisting essentially of a combination of (A) at least one member selected from the group consisting of tungsten compounds, molybdenum compounds, and rhenium compounds, with (B) at least one organoaluminum compound having at least one carbon-to-aluminum bond.

    摘要翻译： 用于转化具有官能团的不饱和化合物的方法，其特征在于使[1]选自羧酸酯，腈，酮，酰胺和醚中的至少一种化合物与碳 - 碳 双键并且在与所述双键结合的位置上没有不饱和键，或所述化合物[1]和[2]的混合物中的至少一种选自具有碳 - 碳双键的烯键式不饱和化合物和 催化剂体系基本上由（A）至少一种选自钨化合物，钼化合物和铼化合物的组分与（A）组合组成的催化剂体系与（A） B）至少一种具有至少一个碳 - 铝键的有机铝化合物。

    Continuous process for the preparation of 2,5-dimethyl-2,4-hexadiene
    62.
    发明授权
    Continuous process for the preparation of 2,5-dimethyl-2,4-hexadiene 失效
    制备2,5-二甲基-2,4-丁二烯的连续方法

    公开(公告)号：US3857903A

    公开(公告)日：1974-12-31

    申请号：US29874472

    申请日：1972-10-18

    申请人： EASTMAN KODAK CO

    发明人： HAGEMEYER H ,  WRIGHT H

    IPC分类号： C07C1/213 ,  C07C7/04 ,  C07C11/12 ,  C07C1/20

    CPC分类号： C07C11/12 ,  C07C1/213 ,  C07C7/04 ,  C07C2531/025

    摘要： 1,1,4,4-tetraalkyl-1,3-butadienes are prepared by the acid catalyzed cleavage and isomerization of a carboxylic acid ester having the formula
    WHERE R is an organic radical such that the product organic acid forms an azeotrope with the product 1,1,4,4-tetraalkyl-1,3butadiene, R1 through R7 are the same or different lower alkyl radicals, and R8 is a lower alkylidene radical, in a process which comprises continuously contacting an acid catalyst at a temperature in the range of about 125*C. to about 250*C. with said carboxylic acid ester and subsequently continuously removing from the reactor an overhead stream comprising 1,1,4,4tetraalkyl-1,3-butadiene and an organic acid, distilling said overhead stream in a first distillation column at a pressure of less than one atmosphere, removing therefrom a second overhead stream comprising 1,1,4,4-tetraalkyl-1,3-butadiene, distilling said second overhead stream at a pressure higher than that of the first distillation column and removing therefrom a bottoms stream comprising 1,1,4,4-tetraalkyl-1,3-butadiene, and distilling said bottoms stream also at a pressure higher than that of the first distillation column so as to obtain a stream of essentially pure 1,1,4,4-tetraalkyl-1,3-butadiene.


    OR

    D R A W I N G

    摘要翻译： 1,1,4,4-四烷基-1,3-丁二烯通过酸式催化裂解和异构化具有下式的羧酸酯制备：OR WHERE R是有机基团，使得产物有机酸与 产物1,1,4,4-四烷基-1,3-丁二烯，R 1至R 7是相同或不同的低级烷基，并且R 8是低级亚烷基，其包括在酸性催化剂的温度 在约125℃至约250℃的范围内与所述羧酸酯反应，随后从反应器中连续除去包含1,1,4,4-四烷基-1,3-丁二烯和有机酸的塔顶物流 在小于一个大气压的第一蒸馏塔中蒸馏所述塔顶物流，从其中除去包含1,1,4,4-四烷基-1,3-丁二烯的第二塔顶物流，在压力下蒸馏所述第二塔顶馏出物流 高于第一蒸馏塔和去除 从而包含1,1,4,4-四烷基-1,3-丁二烯的底部料流，并且在高于第一蒸馏塔的压力下蒸馏塔底料流以获得基本上纯的1， 1,4,4-四烷基-1,3-丁二烯。