Preparation, intermediates for the preparation and the use of a mixture
of dodecdienol isomers
    2.
    发明授权
    Preparation, intermediates for the preparation and the use of a mixture of dodecdienol isomers 失效
    制备,中间体制备和使用十二二烯醇异构体的混合物

    公开(公告)号:US5599848A

    公开(公告)日:1997-02-04

    申请号:US512259

    申请日:1995-08-07

    摘要: A process for preparing a mixture of 8E,10E-dodecadienol (Ia), 8E,10Z-dodecadienol (Ib), 8Z,10E-dodecadienol (Ic) and 8Z,10Z-dodecadienol (Id),H.sub.3 C--CH.dbd.CH--CH.dbd.CH--(CH.sub.2).sub.6 --CH.sub.2 --OH(8E,10E=Ia)(8E,10Z=Ib)(8Z,10E=Ic)(8Z,10Z=Id)starting from 1,8-octanediol (II) which is converted with a halogenating agent into (III)Hal-CH.sub.2 --(CH.sub.2).sub.6 --CH.sub.2 --OH (III)where (III) is subsequently reacted with (IV),H.sub.2 C.dbd.CH--O--R (IV)to give (V)Hal-CH.sub.2 --(CH.sub.2).sub.6 --CH.sub.2 --O--CH(CH.sub.3)--OR(V),(V) is converted in the presence of magnesium and crotonaldehyde into (VI)H.sub.3 C--CH.dbd.CH--CH(OH)--(CH.sub.2).sub.8 --O--CH(CH.sub.3)--OR(VI)and the protective group R and the hydroxyl group are simultaneously eliminated from (VI) in the presence of acid, novel intermediates for this process, and methods for controlling the codling moth Cydia pomonella by interfering with mating using this mixture are described.

    摘要翻译: 制备8E,10E-十二二烯醇(Ia),8E,10Z-十二二烯醇(Ib),8Z,10E-十二二烯醇(Ic)和8Z,10Z-十二二烯醇(Id),H3C-CH = CH-CH =(CH 2)6 -CH 2 -OH(8E,10E = Ia)(8E,10Z = Ib)(8Z,10E = Ic)(8Z,10Z = Id) (III)Hal-CH 2 - (CH 2)6 -CH 2 -OH(III),其中(III)随后与(IV),H 2 C = CH-OR(IV)反应,得到(V) 在镁和巴豆醛存在下,将Hal-CH 2 - (CH 2)6 -CH 2 -O-CH(CH 3)-OR(V),(V)转化成(Ⅵ)H3C-CH = CH-CH (CH 2)8 -O-CH(CH 3)-OR(VI)和保护基R和羟基在酸的存在下同时从(VI)中除去,该方法的新中间体和控制苹果酸的方法 描述了通过使用该混合物干扰配对的飞蛾Cydia pomonella。

    Method for Producing Dinitrotoluene
    6.
    发明申请
    Method for Producing Dinitrotoluene 有权
    生产二硝基甲苯的方法

    公开(公告)号:US20080242900A1

    公开(公告)日:2008-10-02

    申请号:US10586683

    申请日:2005-02-02

    IPC分类号: C07C205/06

    摘要: The invention relates to a method for producing dinitrotoluene, comprising the steps of a) reacting toluene with nitric acid in the presence of sulphuric acid to give mononitrotoluene, b) separating the reaction product of step a) into a mononitrotoluene-containing organic phase and a sulphuric acid-containing aqueous phase, c) reacting the mononitrotoluene-containing organic phase with nitric acid in the presence of sulphuric acid to give dinitrotoluene, d) separating the reaction product of step c) into a dinitrotoluene-containing organic phase and a sulphuric-acid containing aqueous phase, whereby the reaction product of step a) contains 3.0 to 8 wt % of toluene, in relation to the organic phase, and 0.1 to 1.2 wt. % of nitric acid, in relation to the aqueous phase and the phase separation of step b) is carried out in such a manner that further reaction of toluene with nitric acid is prevented.

    摘要翻译: 本发明涉及二硝基甲苯的制备方法,包括以下步骤:a)在硫酸存在下使甲苯与硝酸反应得到单硝基甲苯,b)将步骤a)的反应产物分离成含有单硝基甲苯的有机相和 含硫酸的水相,c)在硫酸存在下使含有单硝基甲苯的有机相与硝酸反应,得到二硝基甲苯,d)将步骤c)的反应产物分离成含有二硝基甲苯的有机相和含硫酸的有机相, 含有酸的水相,其中步骤a)的反应产物相对于有机相含有3.0-8wt%的甲苯,和0.1-1.2wt。 相对于水相和步骤b)的相分离,硝酸的百分比以防止甲苯与硝酸的进一步反应的方式进行。

    Method for the distillative recovery of toluylenediamine
    7.
    发明授权
    Method for the distillative recovery of toluylenediamine 有权
    蒸馏回收甲苯二胺的方法

    公开(公告)号:US07342134B2

    公开(公告)日:2008-03-11

    申请号:US10585648

    申请日:2005-01-07

    IPC分类号: C07C209/00

    CPC分类号: C07C209/84 C07C211/50

    摘要: The invention relates to a process for distillatively preparing TDA from a reactant stream comprising TDA, high boilers and low boilers in a dividing wall column in which a dividing wall is disposed in the longitudinal direction of the column to form an upper combined column region (2), a lower combined column region (3), a feed section (4) having a rectifying section (5) and stripping section (6), and also a withdrawal section (7) having a rectifying section (9) and stripping section (8), which comprises the following steps: a. feeding the reactant stream (13) into the feed section (4) of the dividing wall column (1); b. drawing off a low boiler fraction via the top of the column (11); c. drawing off TDA via a side draw (14) in the withdrawal section (7) of the dividing wall column (1); d. drawing off a low boiler fraction via the bottom of the column (12).

    摘要翻译: 本发明涉及从分隔壁塔中的TDA,高锅炉和低锅炉的反应物流中蒸馏制备TDA的方法,其中分隔壁沿塔的长度方向设置以形成上部组合塔区域(2 ),下组合柱区域(3),具有精馏段(5)和汽提区段(6)的进料段(4),以及具有整流段(9)和汽提段 8),其中包括以下步骤:a。 将反应物流(13)进料到分隔壁塔(1)的进料段(4)中; b。 通过塔(11)的顶部排出低沸点馏分; C。 通过分隔壁塔(1)的抽出部分(7)中的侧拉(14)抽出TDA; d。 通过柱(12)的底部排出低沸点馏分。

    Method for the distillative recovery of toluylenediamine
    8.
    发明申请
    Method for the distillative recovery of toluylenediamine 有权
    蒸馏回收甲苯二胺的方法

    公开(公告)号:US20070083065A1

    公开(公告)日:2007-04-12

    申请号:US10585648

    申请日:2005-01-07

    IPC分类号: C07C209/84

    CPC分类号: C07C209/84 C07C211/50

    摘要: The invention relates to a process for distillatively preparing TDA from a reactant stream comprising TDA, high boilers and low boilers in a dividing wall column in which a dividing wall is disposed in the longitudinal direction of the column to form an upper combined column region (2), a lower combined column region (3), a feed section (4) having a rectifying section (5) and stripping section (6), and also a withdrawal section (7) having a rectifying section (9) and stripping section (8), which comprises the following steps: a. feeding the reactant stream (13) into the feed section (4) of the dividing wall column (1); b. drawing off a low boiler fraction via the top of the column (11); c. drawing off TDA via a side draw (14) in the withdrawal section (7) of the dividing wall column (1); d. drawing off a low boiler fraction via the bottom of the column (12).

    摘要翻译: 本发明涉及从分隔壁塔中的TDA,高锅炉和低锅炉的反应物流中蒸馏制备TDA的方法,其中分隔壁沿塔的长度方向设置以形成上部组合塔区域(2 ),下组合柱区域(3),具有精馏段(5)和汽提区段(6)的进料段(4),以及具有整流段(9)和汽提段 8),其中包括以下步骤:a。 将反应物流(13)进料到分隔壁塔(1)的进料段(4)中; b。 通过塔(11)的顶部排出低沸点馏分; C。 通过分隔壁塔(1)的抽出部分(7)中的侧拉(14)抽出TDA; d。 通过柱(12)的底部排出低沸点馏分。