GAS AND LIQUID PHASE CATALYTIC BECKMANN REARRANGEMENT OF OXIMES TO PRODUCE LACTAMS
    241.
    发明申请
    GAS AND LIQUID PHASE CATALYTIC BECKMANN REARRANGEMENT OF OXIMES TO PRODUCE LACTAMS 有权
    气体和液相催化剂BECKMANN对生产LACTAMS的氧化物排放

    公开(公告)号:US20150306586A1

    公开(公告)日:2015-10-29

    申请号:US14263156

    申请日:2014-04-28

    Abstract: Methods for producing lactams from oximes by performing a Beckmann rearrangement using a silicoaluminophosphate catalyst are provided. These catalysts may be used in gas phase or liquid phase reactions to convert oximes into lactams. High conversion of oxime and high selectivity for the desired lactams are produced using the disclosed methods, including high conversion and selectivity for ε-caprolactam produced from cyclohexanone oxime and high conversion and selectivity for ω-laurolactam produced from cyclododecanone oxime.

    Abstract translation: 提供了通过使用硅铝磷酸盐催化剂进行贝克曼重排来从肟产生内酰胺的方法。 这些催化剂可用于气相或液相反应以将肟转化成内酰胺。 使用所公开的方法制备肟的高转化率和高选择性,包​​括由环己酮肟产生的ε-己内酰胺的高转化率和选择性,以及由环十二酮肟产生的ω-月桂内酰胺的高转化率和选择性。

    Process for producing amide or lactam
    243.
    发明授权
    Process for producing amide or lactam 有权
    生产酰胺或内酰胺的方法

    公开(公告)号:US08680267B2

    公开(公告)日:2014-03-25

    申请号:US12997287

    申请日:2009-06-10

    CPC classification number: C07D201/04 C07D223/10 Y02P20/52

    Abstract: A process produces an amide or lactam by subjecting an oxime compound to rearrangement in a solvent in the presence of: at least one catalyst selected from the group consisting of an aromatic compound (A1) containing a leaving group bound to a carbon atom constituting the aromatic ring, the aromatic ring including, as a constitutive atom thereof, a heteroatom or including, as a constitutive atom thereof, a carbon atom bound to an electron-withdrawing group, and a compound (A2) containing a structure of Formula (1): -G-LA (1) wherein G represents P, N, S, B or Si atom; and LA represents a leaving group, wherein G is bound to one or more atoms or groups in addition to LA; and a co-catalyst including a halogen-containing organic acid, to give the corresponding amide or lactam, wherein, when the aromatic compound (A1) alone is used as the catalyst, the solvent is at least one solvent selected typically from hydrocarbon solvents. The production process can yield amides or lactams simply in high yields without causing large amounts of by-products such as ammonium sulfate.

    Abstract translation: 一种方法是通过使肟化合物在溶剂中进行重排来生成酰胺或内酰胺:在至少一种选自包含与构成芳香族的碳原子结合的离去基团的芳族化合物(A1)的催化剂的存在下, 芳环包括作为其组成原子的杂原子或其包含作为其组成原子的与吸电子基团结合的碳原子,和包含式(1)结构的化合物(A2): -G-LA(1)其中G表示P,N,S,B或Si原子; 并且LA表示离去基团,其中除了LA之外,G与一个或多个原子或基团结合; 和包含含卤素的有机酸的助催化剂,得到相应的酰胺或内酰胺,其中当单独使用芳族化合物(A1)作为催化剂时,溶剂是通常选自烃溶剂的至少一种溶剂。 生产过程可以简单地以高产率产生酰胺或内酰胺,而不会引起大量副产物如硫酸铵。

    GAS AND LIQUID PHASE CATALYTIC BECKMANN REARRANGEMENT OF OXIMES TO PRODUCE LACTAMS
    245.
    发明申请
    GAS AND LIQUID PHASE CATALYTIC BECKMANN REARRANGEMENT OF OXIMES TO PRODUCE LACTAMS 有权
    气体和液相催化剂BECKMANN对生产LACTAMS的氧化物排放

    公开(公告)号:US20130109851A1

    公开(公告)日:2013-05-02

    申请号:US13658495

    申请日:2012-10-23

    Abstract: Methods for producing lactams from oximes by performing a Beckmann rearrangement using a silicoaluminophosphate catalyst are provided. These catalysts may be used in gas phase or liquid phase reactions to convert oximes into lactams. High conversion of oxime and high selectivity for the desired lactams are produced using the disclosed methods, including high conversion and selectivity for ε-caprolactam produced from cyclohexanone oxime and high conversion and selectivity for ω-laurolactam produced from cyclododecanone oxime.

    Abstract translation: 提供了通过使用硅铝磷酸盐催化剂进行贝克曼重排来从肟产生内酰胺的方法。 这些催化剂可用于气相或液相反应以将肟转化成内酰胺。 使用所公开的方法产生肟的高转化率和对所需内酰胺的高选择性,包​​括由环己酮肟产生的ε-己内酰胺的高转化率和选择性,以及由环十二烷酮肟产生的ω-月桂内酰胺的高转化率和选择性。

    Process for producing amide or lactam
    246.
    发明授权
    Process for producing amide or lactam 有权
    生产酰胺或内酰胺的方法

    公开(公告)号:US08354527B2

    公开(公告)日:2013-01-15

    申请号:US12988758

    申请日:2009-04-22

    CPC classification number: C07D201/04 C07D225/02 Y02P20/52

    Abstract: The present invention relates to a process for producing an amide or lactam, particularly laurolactam, wherein catalytic amounts of an acidic chloride and a Lewis acid are used in Beckmann rearrangement of an oxime compound. In accordance with the process, side reactions during Beckmann rearrangement can be so controlled that selectivity can be improved and strong coloring in the reaction can be prevented, giving a high-quality amide or lactam.

    Abstract translation: 本发明涉及一种制备酰胺或内酰胺,特别是月桂内酰胺的方法,其中在肟化合物的贝克曼重排中使用催化量的酸性氯化物和路易斯酸。 根据该方法,可以控制Beckmann重排期间的副反应,从而可以改善选择性,并且可以防止反应中的强烈着色,得到高质量的酰胺或内酰胺。

    PROCESS FOR PRODUCING LAUROLACTAM
    250.
    发明申请
    PROCESS FOR PRODUCING LAUROLACTAM 有权
    生产乳酸菌的方法

    公开(公告)号:US20100267944A1

    公开(公告)日:2010-10-21

    申请号:US12744675

    申请日:2008-11-19

    CPC classification number: C07D201/04 C07D225/02 Y02P20/582

    Abstract: Provided is a process for efficiently producing laurolactam by simple steps from cyclododecanone and hydroxylamine. This production process comprises the steps of: (a) reacting cyclododecanone with hydroxylamine in an aqueous solution in the presence of an oxime-formation solvent to produce cyclododecanone oxime; (b) separating the reaction mixture obtained after the oxime-forming step into an oil and an aqueous phases and collecting a solution of cyclododecanone oxime of the oil phase; (c) removing a part or all of the oxime-formation solvent and dissolved water from the solution of cyclododecanone oxime which is collected as an oil phase in the oil/aqueous phase separation step, whereby preparing a solution containing a rearrangement solvent to be used in a rearrangement reaction in a later step and the cyclododecanone oxime; (d) producing laurolactam from cyclododecanone oxime by rearrangement reaction using an aromatic-ring containing compound as a rearrangement catalyst; and (e) separating and removing the rearrangement solvent and the rearrangement catalyst from the reaction mixture after the rearrangement step, and purifying the laurolactam.

    Abstract translation: 提供一种通过简单的步骤从环十二酮和羟胺有效地生产十二内酰胺的方法。 该制备方法包括以下步骤:(a)在肟形成溶剂存在下,使环十二酮与羟胺在水溶液中反应,生成环十二酮肟; (b)将在肟形成步骤后获得的反应混合物分离成油相和水相,并收集油相的环十二烷酮肟溶液; (c)从油/水相分离步骤中以油相收集的环十二酮肟溶液中除去部分或全部肟形成溶剂和溶解的水,由此制备含有使用的重排溶剂的溶液 在后续步骤中的重排反应和环十二酮肟; (d)使用含芳环的化合物作为重排催化剂,通过重排反应从环十二酮肟生产月桂内酰胺; 和(e)在重排步骤之后从反应混合物中分离和除去重排溶剂和重排催化剂,并纯化月桂内酰胺。

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