Preparation of caprolactam
    5.
    发明授权
    Preparation of caprolactam 失效
    己内酰胺的制备

    公开(公告)号:US4963673A

    公开(公告)日:1990-10-16

    申请号:US448902

    申请日:1989-12-12

    IPC分类号: C07D201/08

    CPC分类号: C07D201/08

    摘要: Caprolactam is prepared by heating a 6-aminocaproic ester in liquid phase in the presence of water to 230.degree.-350.degree. C. under superatmospheric pressure in a reaction medium comprising a liquid aromatic hydrocarbon having a boiling point of from 80.degree. to 240.degree. C. which is inert under reaction conditions, and isolating caprolactam from the reaction mixture.

    摘要翻译: 己内酰胺通过在含有沸点为80〜240℃的液体芳烃的反应介质的反应介质中,在高温大气压下,在水存在下,将液体中的6-氨基己酸酯加热到230〜 在反应条件下是惰性的,并从反应混合物中分离己内酰胺。

    Preparation of 2-substituted 4-acyloxy-2-butenals
    7.
    发明授权
    Preparation of 2-substituted 4-acyloxy-2-butenals 失效
    2-取代的4-酰氧基-2-丁烯醛的制备

    公开(公告)号:US4873362A

    公开(公告)日:1989-10-10

    申请号:US115891

    申请日:1987-11-02

    CPC分类号: C07C67/297

    摘要: 2-Substituted 4-acyloxy-2-butenals of the general formula I ##STR1## where R.sup.1 is alkyl of 1 to 12 carbon atoms which may be substituted by cycloalphatic, aromatic or heterocyclic radicals, by alkenyl or alkynyl or by hydroxyl, ether, thioether, acetoxy acyl, alkylamino, carboxyl or carbalkoxy, and R.sup.2 is acyloxy, are prepared by reacting a monosubstituted acetaldehyde of the general formula II ##STR2## where R.sup.2 has the abovementioned meaning, with an aldehyde of the general formula III ##STR3## where R.sup.1 has the abovementioned meaning, in the presence of a linear or cyclic secondary amine and of an organic acid at from 20.degree. to 100.degree. C.

    摘要翻译: 2-取代的通式I的(I)的4-酰氧基-2-丁烯,其中R 1是可被环基,芳族或杂环基取代的,可被烯基或炔基或羟基取代的1至12个碳原子的烷基 ,醚,硫醚,乙酰氧基酰基,烷基氨基,羧基或烷氧基,R2是酰氧基,是通过使具有上述含义的R2具有上述含义的通式II(II)的单取代乙醛与通式 式III(III)其中R 1具有上述含义,在线性或环状仲胺存在下,在20-100℃的有机酸存在下进行。

    Preparation of 4-acetals of butene-1,4-dial and novel acetals of
butene-1,4-dial
    8.
    发明授权
    Preparation of 4-acetals of butene-1,4-dial and novel acetals of butene-1,4-dial 失效
    保护1,4-DIAL的4-乙酸丁酯和1,4-DIAL的新型乙烯的制备

    公开(公告)号:US5162552A

    公开(公告)日:1992-11-10

    申请号:US44805

    申请日:1987-04-30

    CPC分类号: C07C45/74 C07D319/06

    摘要: A process for the preparation of 4-acetals of butene-1,4-dial of the formula ##STR1## where R is an alkyl, alkenyl, cycloalkyl or aralkyl radical of 1 to 12 carbon atoms which may contain alkoxy groups, or the two radicals R together form an alkylene or alkenylene radical of 2 to 10 carbon atoms which may contain alkoxy groups, and R.sup.1 is an alkyl, alkenyl or alkynyl radical of 1 to 12 carbon atoms which may be substituted by cycloaliphatic, aromatic or heterocyclic radicals or by hydroxyl, ether, thioether, acyl, alkylamino, carboxyl or carbalkoxy groups, or is an unsubstituted or substituted aryl radical or an alkoxy, alkylthio or acyloxy group, wherein a glyoxal monoacetal of the formula ##STR2## is reacted with an aldehyde of the formulaR.sup.1 --CH.sub.2 --CHO IIIat up to 150.degree. C., and novel acetals of butene-1,4-dial.

    摘要翻译: 制备式Ia的1,4-缩醛的4-缩醛的方法,其中R是可以含有烷氧基的具有1至12个碳原子的烷基,烯基,环烷基或芳烷基,或 两个基团R一起形成可含有烷氧基的2至10个碳原子的亚烷基或亚烯基,R 1是可以被脂环族,芳族或杂环基取代的具有1至12个碳原子的烷基,烯基或炔基,或 通过羟基,醚,硫醚,酰基,烷基氨基,羧基或烷氧基,或者是未取代或取代的芳基或烷氧基,烷硫基或酰氧基,其中式II的乙二醛单缩醛与式 式R1-CH2-CHOⅢ在最高达150℃,新戊烯-1,4-表盘的缩醛。

    Preparation of poloxy-alkylene glycols
    10.
    发明授权
    Preparation of poloxy-alkylene glycols 失效
    烷氧基 - 亚烷基二醇的制备

    公开(公告)号:US5416240A

    公开(公告)日:1995-05-16

    申请号:US24903

    申请日:1993-03-02

    CPC分类号: C08G65/20

    摘要: Polyoxyalkylene glycols are prepared by a process in which tetrahydrofuran is polymerized with a total of not more than 95 mol %, based on the amount of tetrahydrofuran used, of one or more comonomers from the group consisting of the cyclic ethers and acetals in the absence of water and in the presence of a monohydric alcohol or of a monocarboxylic acid with the aid of an anhydrous heteropoly acid catalyst, and the polyoxyalkylene glycol is liberated from the resulting polyoxyalkylene glycol monoethers or polyoxyalkylene glycol monoesters by cleavage of the monoether or monoester bond.

    摘要翻译: 聚氧亚烷基二醇通过以下方法制备,其中四氢呋喃基于所用四氢呋喃的总量不超过95摩尔%,在不存在共聚单体的情况下聚合来自由环醚和缩醛组成的组中的一种或多种共聚单体 水和一元醇或单羧酸存在下,借助于无水杂多酸催化剂,通过裂解单醚或单酯键,从所得聚氧亚烷基二醇单醚或聚氧亚烷基二醇单酯中释放出聚氧亚烷基二醇。