Process for producing 4-substituted azetidinone derivatives
    54.
    发明公开
    Process for producing 4-substituted azetidinone derivatives 失效
    Verfahren zur Herstellung von 4-substitutionierten Azetidinonderivaten。

    公开(公告)号:EP0563878A2

    公开(公告)日:1993-10-06

    申请号:EP93105239.3

    申请日:1993-03-30

    CPC classification number: C07D403/12 C07D201/02 C07D205/09 C07D405/12

    Abstract: A process for producing a 4-substituted azetidinone derivative represented by the following general formula [III]:

    (wherein OR is a protected hydroxy group, Y is an alkyl group, an alkoxy group, a silyloxy group, a carbamoyloxy group, an amino group, a substituted or unsubstituted aromatic group or a substituted or unsubstituted heterocyclic group, and n is an integer of 0 or 1, provided that n does not represent O when Y is an alkoxy group, silyloxy group, carbamoyloxy group or amino group), characterized in that a 2-azetidinone derivative represented by the following general formula [I]:

    (wherein OR is as defined above, and X is an alkyl group or a substituted or unsubstituted aromatic group) is reacted with thiocarboxylic acid represented by the following general formula [II]:



            HSCO-(CH₂) n -Y   [II]



    (wherein Y and n are respectively as defined above) in an organic solvent in the presence of copper compounds.
    The aforementioned method can shorten the production process compared with the prior method. It is also highly advantageous from an industrial point of view because it does not employ mercury salts.

    Abstract translation: 用于制备由以下通式[III]表示的4-取代的氮杂环丁酮衍生物的方法:(其中OR为保护的羟基,Y为烷基,烷氧基,甲硅烷氧基,氨基甲酰氧基, 氨基,取代或未取代的芳基或取代或未取代的杂环基,n为0或1的整数,条件是当Y为烷氧基,甲硅烷氧基,氨基甲酰氧基或氨基时,n不为O ),其特征在于由以下通式[I]表示的2-氮杂环丁酮衍生物:其中OR如上定义,X​​为烷基或取代或未取代的芳族基团)与硫代羧酸 在有机溶剂中,在铜化合物的存在下,由以下通式[II]代表:HSCO-(CH 2)n Y [II](其中Y和n分别如上定义)。 与先前的方法相比,上述方法可以缩短生产过程。 从工业角度来看,它也是非常有利的,因为它不使用汞盐。

    Verfahren zur Herstellung von N-substituierten Lactamen
    55.
    发明公开
    Verfahren zur Herstellung von N-substituierten Lactamen 失效
    一种用于制备N-取代的内酰胺的过程。

    公开(公告)号:EP0531673A1

    公开(公告)日:1993-03-17

    申请号:EP92112353.5

    申请日:1992-07-20

    Applicant: BAYER AG

    CPC classification number: C07D201/02 Y02P20/52

    Abstract: N-substituierte Lactame der Formel

    können aus Lactam-N-carbonsäureestern oder Lactim-O-carbonsäureestern der Formeln

    durch thermische oder gemischt thermisch und katalysierte CO₂-Abspaltung bei 80-450°C hergestellt werden. Die Lactam-N-carbonsäureester und die Lactim-O-carbonsäureester können aus am Stickstoff unsubstituierten Lactamen der Formel

    und Carbonaten oder Pyrocarbonaten der Formel



            R³O-CO-(-O-CO) n -OR³   (V)



    in situ hergestellt und ohne Zwischenisolierung ebenfalls unter CO₂-Abspaltung in die N-substituierten Lactame der Formel (I) umgewandelt werden. Die Indices m und n und die Substituenten R¹, R² und R³ haben die in der Beschreibung angegebene Bedeutung. Es kann in der Gasphase oder der Flüssigphase gearbeitet werden.

    Abstract translation: 的N-取代的内酰胺可以通过CO 2的热或混合并热催化进化在80-450℃下从内酰胺的N-羧酸盐来制备或下式的内酰亚胺O型羧酸盐。 内酰胺的N-羧酸盐和内酰亚胺O型羧酸盐可以在式和碳酸盐或由式R 3 O-CO的焦碳酸酯的氮的内酰胺为未取代的 - 产生正OR 3(V)在原位,和 - (O-CO) 无需分离中间体,同样在式下的CO 2(I)的演进的N-取代的内酰胺被转化。 指数m和n和取代基R 1,R 2和R 3具有说明书中所示的含义。 有可能在气相或液相中的工作。

    Methods of making pyrrolidones
    57.
    发明授权
    Methods of making pyrrolidones 有权
    制备吡咯烷酮的方法

    公开(公告)号:US06706893B2

    公开(公告)日:2004-03-16

    申请号:US10280577

    申请日:2002-10-25

    CPC classification number: C07D207/267 C07D201/02 C07D201/08

    Abstract: The present invention provides methods for making N-methylpyrrolidine and analogous compounds via hydrogenation. Novel catalysts for this process, and novel conditions/yields are also described. Other process improvements may include extraction and hydrolysis steps. Some preferred reactions take place in the aqueous phase. Starting materials for making N-methylpyrrolidine may include succinic acid, N-methylsuccinimide, and their analogs.

    Abstract translation: 本发明提供了通过氢化制备N-甲基吡咯烷和类似化合物的方法。 还描述了用于该方法的新型催化剂和新的条件/收率。 其他工艺改进可以包括提取和水解步骤。 一些优选的反应发生在水相中。 用于制备N-甲基吡咯烷的原料可包括琥珀酸,N-甲基琥珀酰亚胺及其类似物。

    Preparation of N-substituted lactams
    59.
    发明授权
    Preparation of N-substituted lactams 失效
    N-取代的内酰胺的制备

    公开(公告)号:US5276165A

    公开(公告)日:1994-01-04

    申请号:US982300

    申请日:1992-11-25

    CPC classification number: C07D201/02 C07D201/08 C07D207/267

    Abstract: A process for the preparation of N-substituted lactams of the formula I ##STR1## where Z is C.sub.2 - to C.sub.10 -alkylene, C.sub.7 - to C.sub.12 -aralkylene, phenylene or naphthylene, andR.sup.1 is C.sub.1 - to C.sub.20 -alkyl, C.sub.6 - to C.sub.10 -aryl or C.sub.7 - to C.sub.12 -aralkyl,by hydrogenating a compound of the formula II ##STR2## where W is C.sub.2 - to C.sub.10 -alkylene, C.sub.2 - to C.sub.10 -alkenylene, C.sub.7 - to C.sub.12 -aralkylene, phenylene or naphthylene, andX and Y together form an oxa or imido bridge of the formula ##STR3## or alternatively are identical or different and are hydroxyl, C.sub.1 - to C.sub.20 -alkoxy, C.sub.6 - to C.sub.10 -aryloxy or C.sub.7 - to C.sub.12 -aralkoxy, and, if X and Y are different, Y, in addition to the abovementioned meanings, may also be hydrogen,at superatmospheric pressure and at elevated temperature in the presence of a catalyst and in the presence of an amine, which comprises using a secondary and/or tertiary amine of the formula IIINH.sub.n R.sub.3-n .sup.1where R.sup.1 is as defined above and n is 0 or 1, or a mixture of a secondary and/or teritary amine of this type with a primary amine of the formula IVR.sup.1 --NH.sub.2 (IV)as the starting material, and carrying out the reaction with addition of water and/or ammonia.

    Abstract translation: 制备式I的N-取代的内酰胺的方法(I)其中Z为C 2至C 10亚烷基,C 7至C 12 - 亚芳基,亚苯基或亚萘基,R 1为C 1 -C 20烷基 C 6 -C 10 - 芳基或C 7 - 至C 12 - 芳烷基,其中W是C 2 - 至C 10 - 亚烷基,C 2至C 10亚烯基,C 7 - 至C 12 - 亚烷基, - 亚烷基,亚苯基或亚萘基,X和Y一起形成下式的氧杂或亚氨基桥,或者可选地相同或不同,为羟基,C 1至C 20 - 烷氧基,C 6至C 10 - 芳氧基或C 7 - 对于C 12 - 芳烷氧基,并且如果X和Y不同,除了上述含义之外,Y还可以是氢,在超大气压和升高的温度下,在催化剂的存在下和在胺的存在下, 包括使用式III NH n R 3-n 1的仲和/或叔胺,其中R 1如上定义并且n为0或1,或者该仲胺和/或叔胺的混合物 以式ⅣR-NH2(Ⅳ)的伯胺为起始原料,并加入水和/或氨进行反应。

    Conversion of 2-dialkylamino-3H-azepines into epsilon caprolactams
    60.
    发明授权
    Conversion of 2-dialkylamino-3H-azepines into epsilon caprolactams 失效
    2-二烷基氨基-3H-氮杂转化为ε己内酰胺

    公开(公告)号:US4110323A

    公开(公告)日:1978-08-29

    申请号:US741838

    申请日:1976-11-15

    CPC classification number: C07D201/02 C07D223/12

    Abstract: This invention relates to a process of catalytically converting nitrobenzene to 2-amino-3H-azepines by the reaction of the nitrobenzene with trisaminophosphine and an amine of the formula HNR'.sub.2, where R' is lower alkyl containing 1 to 6 carbon atoms.In addition, this invention concerns the catalytic hydrogenation of 2-amino-3H-azepine to epsilon caprolactam.

    Abstract translation: 本发明涉及通过硝基苯与三氨基膦的反应和式HNR'2的胺反应将硝基苯催化转化为2-氨基-3H-吖庚因的方法,其中R'是含有1至6个碳原子的低级烷基。

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