Preparation of tertiary alcohols
    61.
    发明授权
    Preparation of tertiary alcohols 失效
    叔醇的制备

    公开(公告)号:US4493801A

    公开(公告)日:1985-01-15

    申请号:US317001

    申请日:1981-11-02

    摘要: Tertiary alcohols are prepared by oxidizing tertiary aldehydes with oxygen at elevated temperatures.The tertiary alcohols prepared in this way are valuable and versatile intermediates for dyes, drugs and crop protection agents and are used, for example, in the preparation of agrochemicals.

    摘要翻译: 在高温下用氧气氧化叔醛制备叔醇。 以这种方式制备的叔醇是用于染料,药物和作物保护剂的有价值和通用的中间体,并且用于例如农药的制备。

    Process for the preparation of an aryl mono-, di-, and/or polyurethane
    63.
    发明授权
    Process for the preparation of an aryl mono-, di-, and/or polyurethane 失效
    芳基单 - ,二 - 和/或聚氨酯的制备方法

    公开(公告)号:US4375000A

    公开(公告)日:1983-02-22

    申请号:US135242

    申请日:1980-03-31

    CPC分类号: C07C271/06

    摘要: A process for the preparation of an aryl mono-, di-, and/or polyurethane comprising the steps of A. reacting a primary aromatic mono-, di-, and/or polyamine with an O-alkyl carbamate in the presence of an alcohol at temperatures greater than 160.degree. C., andB. separating the ammonia and other by-products from the aryl mono-, di-, and/or polyurethane.The reaction is preferably carried out in the presence of urea. The aryl mono-, di-, and/or polyurethanes produced are valuable end and intermediate products. They can be transferred into the corresponding isocyanates which can then be used for the preparation of polyurethanes.

    摘要翻译: 一种制备芳基单 - ,二 - 和/或聚氨酯的方法,包括以下步骤:在醇存在下使主芳族单 - ,二 - 和/或多胺与氨基甲酸O-烷基酯反应 在大于160℃的温度下,和B.将氨和其它副产物与芳基单 - ,二 - 和/或聚氨酯分离。 反应优选在尿素存在下进行。 所生产的芳基单,二和/或聚氨酯是有价值的终端和中间产物。 它们可以转移到相应的异氰酸酯中,然后可以用于制备聚氨酯。

    Preparation of N-aryloxazolidine-2,4-diones
    64.
    发明授权
    Preparation of N-aryloxazolidine-2,4-diones 失效
    N-芳基恶唑烷-2,4-二酮的制备

    公开(公告)号:US4294971A

    公开(公告)日:1981-10-13

    申请号:US127759

    申请日:1980-03-06

    CPC分类号: C07D263/44

    摘要: N-Aryloxazolidine-2,4-diones are prepared by reacting a nitrobenzene with a 2-hydroxycarboxylic acid ester and carbon monoxide in the presence of selenium and a basic compound under super-atmospheric pressure and at an elevated temperature.The N-aryloxazolidine-2,4-diones of the formula I, obtainable by the process of the invention are valuable active ingredients and starting materials for the preparation of crop protection agents, dyes and drugs.

    摘要翻译: 通过在超大气压和升高的温度下,在硒和碱性化合物的存在下,使硝基苯与2-羟基羧酸酯和一氧化碳反应来制备N-芳基恶唑烷-2,4-二酮。 通过本发明的方法获得的式I的N-芳基恶唑烷-2,4-二酮是用于制备作物保护剂,染料和药物的有价值的活性成分和起始材料。

    Process for the preparation of an aryl mono-, di-, and/or polyurethane
    65.
    发明授权
    Process for the preparation of an aryl mono-, di-, and/or polyurethane 失效
    芳基单 - ,二 - 和/或聚氨酯的制备方法

    公开(公告)号:US4278805A

    公开(公告)日:1981-07-14

    申请号:US135246

    申请日:1980-03-31

    CPC分类号: C08G18/701

    摘要: A process for the preparation of an aryl-mono and/or polyurethane comprising the steps ofA. reacting a primary aromatic mono, di-, and/or polyamine with an O-alkyl carbamate in the presence of alcohol and catalysts, andB. separating the ammonia and other by-products from the aliphatic and/or cycloaliphatic di- and/or polyurethane.The reaction is preferably carried out in the presence of urea. The aryl mono-, di-, and/or polyurethanes produced are valuable end and intermediate products. They can be transferred into the corresponding isocyanates which can then be used for the preparation of polyurethanes.

    摘要翻译: 一种制备芳基单和/或聚氨酯的方法,包括以下步骤:在醇和催化剂存在下,使伯芳基单,二胺和/或多胺与氨基甲酸O-烷基酯反应。 从脂族和/或脂环族二酯和/或聚氨酯中分离氨和其它副产物。 反应优选在尿素存在下进行。 所生产的芳基单,二和/或聚氨酯是有价值的终端和中间产物。 它们可以转移到相应的异氰酸酯中,然后可以将其用于制备聚氨酯。

    Preparation of neopentyl glycol hydroxypivalate
    69.
    发明授权
    Preparation of neopentyl glycol hydroxypivalate 失效
    新戊二醇羟基新戊酸酯的制备

    公开(公告)号:US5380919A

    公开(公告)日:1995-01-10

    申请号:US32025

    申请日:1993-03-16

    CPC分类号: C07C67/44

    摘要: A process for preparing neopentyl glycol hydroxypivalate by base-catalyzed disproportionation of hydroxypivalaldehyde, wherein the reaction is carried out in the presence of a readily water-soluble alkaline earth metal salt and of an alkali metal hydroxide.

    摘要翻译: 通过羟基新戊醛的碱催化歧化制备新戊二醇羟基新戊酸的方法,其中反应在容易水溶性的碱土金属盐和碱金属氢氧化物的存在下进行。