Method for producing lactam
    25.
    发明专利
    Method for producing lactam 审中-公开
    生产乳酸菌的方法

    公开(公告)号:JP2008179605A

    公开(公告)日:2008-08-07

    申请号:JP2007295092

    申请日:2007-11-14

    CPC classification number: C07D201/04 C07D201/10 Y02P20/52 Y02P20/55

    Abstract: PROBLEM TO BE SOLVED: To provide a method for commercially and efficiently manufacturing a lactam from a cycloalkane at a high yield using a catalyst being friendly to the environment. SOLUTION: The method for manufacturing a lactam comprising a process A of synthesizing a corresponding cycloalkanone oxime by causing a cycloalkane and a nitrous acid ester to react with each other in the presence of a nitrogen-atom-containing cyclic compound (a) comprising a skeleton represented by formula (i) [wherein X represents an oxygen atom or an -OR group (R represents a hydrogen atom or a protective group of a hydroxy group)] as a component constituting the ring thereof and a process B of converting the resulting cycloalkanone oxime obtained in the process A to form a corresponding lactam by virtue of the Beckmann rearrangement, and also comprises a process of removing the nitrogen-atom-containing cyclic compound (a) in the midst of the process A and/or after completing the process A. COPYRIGHT: (C)2008,JPO&INPIT

    Abstract translation: 待解决的问题:提供使用对环境友好的催化剂以高产率从环烷烃商业上有效地制造内酰胺的方法。 解决方案:制备内酰胺的方法,其包括通过使环烷烃和亚硝酸酯在含氮原子的环状化合物(a)的存在下相互反应来合成相应的环烷酮肟的方法A, 包含由式(i)表示的骨架[其中X表示氧原子或-OR基团(R表示氢原子或羟基的保护基)]作为构成环的组分和转化 在方法A中获得的所得环烷酮肟由于Beckmann重排而形成相应的内酰胺,并且还包括在方法A和/或之后除去含氮原子的环状化合物(a)的方法 完成过程A.版权所有(C)2008,JPO&INPIT

    Preparation of lactams from cycloalkanes
    30.
    发明授权
    Preparation of lactams from cycloalkanes 失效
    环孢素的制备

    公开(公告)号:US3652552A

    公开(公告)日:1972-03-28

    申请号:US3652552D

    申请日:1967-12-18

    Applicant: STAMICARBON

    CPC classification number: C07D201/10

    Abstract: A PROCESS FOR PRODUCING LACTAMS FROM CYCLOALKANES IS DISCLOSED. CYCLOALKANES ARE REACTED WITH NITROSYL CHLORIDE WHILE SUBJECTED TO IRRADIATION, IN THE PRESENCE OF A NITRILE WHICH DOES NOT CONTAIN ANY METHYLENE GROUPS CAPABLE OF REACTING WITH NITROSYL UNDER THE REACTION CONDITIONS. WLACTAMS ARE DIRECTLY PRODUCED BY HEATING THE REACTION PRODUCT.

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