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    Methods of making pyrrolidones
    64.
    发明授权
    Methods of making pyrrolidones 有权
    制备吡咯烷酮的方法

    公开(公告)号：US06632951B2

    公开(公告)日：2003-10-14

    申请号：US10280622

    申请日：2002-10-25

    Applicant: Todd Werpy ,  John G. Frye, Jr. ,  Yong Wang ,  Alan H. Zacher

    Inventor： Todd Werpy ,  John G. Frye, Jr. ,  Yong Wang ,  Alan H. Zacher

    IPC: C07C207263

    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。

    Methods of making pyrrolidones
    65.
    发明申请
    Methods of making pyrrolidones 有权

    公开(公告)号：US20030114687A1

    公开(公告)日：2003-06-19

    申请号：US10280577

    申请日：2002-10-25

    Inventor： Todd Werpy ,  John G. Frye JR. ,  Yong Wang ,  Alan H. Zacher

    IPC: C07D207/12

    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.

    Process for the preparation of N-substituted lactams
    67.
    发明授权
    Process for the preparation of N-substituted lactams 失效
    制备N-取代的内酰胺的方法

    公开(公告)号：US5986092A

    公开(公告)日：1999-11-16

    申请号：US888492

    申请日：1997-07-08

    Applicant: Michel Denarie ,  Khann Ly Kok

    Inventor： Michel Denarie ,  Khann Ly Kok

    IPC: B01J31/02 ,  C07B61/00 ,  C07D201/02 ,  C07D207/26 ,  C07D207/27 ,  C07D223/10 ,  C07D211/74 ,  C07D227/08 ,  C07D41/06

    CPC classification number: C07D201/02 ,  C07D207/27 ,  C07D223/10 ,  Y02P20/52

    Abstract: The invention relates to a process for the preparation of N-substituted lactams by reaction of a lactam, which is unsubstituted on the nitrogen, with an organic halide in the presence of at least one solid-liquid phase transfer catalyst, such as a quaternary ammonium salt, and of at least one solid inorganic base, such as an alkali metal hydroxide, and in the absence of solvent. By this process, N-substituted lactams are obtained with good yields and high purity. The absence of solvent makes possible a considerable gain in productivity and an improvement in safety and in regard for the environment.

    Abstract translation: 本发明涉及一种制备N-取代的内酰胺的方法，该方法是在至少一种固相 - 液相转移催化剂如季铵盐存在下，通过在氮上未取代的内酰胺与有机卤化物反应制备N-取代的内酰胺 盐，以及至少一种固体无机碱，例如碱金属氢氧化物，以及在不存在溶剂的情况下。 通过该方法，获得了具有良好产率和高纯度的N-取代的内酰胺。 没有溶剂使生产效率大幅提高，安全性和环境方面都有所改善。

    Process for preparing lower lactams from allylic halide substrates
    68.
    发明授权
    Process for preparing lower lactams from allylic halide substrates 失效
    从烯丙基卤化物底物制备低级内酰胺的方法

    公开(公告)号：US4110340A

    公开(公告)日：1978-08-29

    申请号：US745019

    申请日：1976-11-26

    Applicant: John F. Knifton

    Inventor： John F. Knifton

    IPC: C07D201/02 ,  C07D207/26

    CPC classification number: C07D201/02

    Abstract: This invention concerns processes for preparing cyclic, five-membered ring, lactams through the carbonylation of allylic substrates in the presence of rhodium catalysts.

    Abstract translation: 本发明涉及在铑催化剂存在下通过烯丙基底物的羰基化制备环状五元环，内酰胺的方法。

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