SYNTHESIS OF LACTAMS
    1.
    发明申请
    SYNTHESIS OF LACTAMS 审中-公开
    LACTAMS的合成

    公开(公告)号:WO2013163239A1

    公开(公告)日:2013-10-31

    申请号:PCT/US2013/037878

    申请日:2013-04-24

    CPC classification number: C07D487/14 C07D205/08

    Abstract: Methods for the synthesis of lactams are presented whereby a carboxylic acid of the formula HOOC------OR---NH-LG, wherein OR is an organic moiety and LG is a leaving group, is reacted with an acid, such as an organic acid, in particular a strong acid, and a dehydrating agent, which may be one in the same such as a strong acid anhydride, such that the amount of acid added allows for the desired transformation to take place without the loss of the leaving group (LG) before the cyclization, and recovering the lactam.

    Abstract translation: 提出了合成内酰胺的方法,其中式HOOC ------ OR --- NH-LG的羧酸(其中OR为有机部分,LG为离去基团)与酸例如 作为有机酸,特别是强酸,和脱水剂,其可以是相同的,例如强酸酐,使得加入的酸的量可以进行所需的转化而不损失 在环化前离开组(LG),并回收内酰胺。

    PROCESS FOR SYNTHESIS OF LACTAMS
    5.
    发明申请
    PROCESS FOR SYNTHESIS OF LACTAMS 审中-公开
    合成纤维素的方法

    公开(公告)号:WO2015061407A1

    公开(公告)日:2015-04-30

    申请号:PCT/US2014/061712

    申请日:2014-10-22

    Abstract: Methods for the synthesis of lactams are presented whereby a carboxylic acid of the formula HOOC------OR---NH-LG, wherein OR is an organic moiety and LG is a leaving group, is reacted with an acid, such as an organic acid, in particular a strong acid, and a dehydrating agent, which may be one in the same such as a strong acid anhydride, such that the amount of acid added allows for the desired transformation to take place without the loss of the leaving group (LG) before the cyclization, and recovering the lactam such as that of the formula (a), provided herein, wherein G represents the atom(s) needed to form a closed ring.

    Abstract translation: 提出了合成内酰胺的方法,其中式HOOC ------ OR --- NH-LG的羧酸(其中OR为有机部分,LG为离去基团)与酸例如 作为有机酸,特别是强酸,和脱水剂,其可以是相同的,例如强酸酐,使得加入的酸的量可以进行所需的转化而不损失 在环化前离去基团(LG),并回收如本文提供的式(a)的内酰胺,其中G表示形成封闭环所需的原子。

Patent Agency Ranking