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    Process for scrubbing dinitrotoluene
    1.
    发明授权
    Process for scrubbing dinitrotoluene 有权
    洗涤二硝基甲苯的方法

    公开(公告)号：US09249083B2

    公开(公告)日：2016-02-02

    申请号：US13870506

    申请日：2013-04-25

    申请人： BASF SE

    发明人： Samuel Neto ,  Ruediger Fritz ,  Renate Hempel ,  Holger Allardt ,  Barbara Becker ,  Julia Leschinski ,  Sebastian Ahrens ,  Heinrich Hermann ,  Mirko Haendel ,  Juergen Poehlmann

    IPC分类号： C07C205/00 ,  C07C201/00 ,  C07C205/06 ,  C07C201/06

    CPC分类号： C07C205/06 ,  C07C201/06

    摘要： The invention relates to a process for scrubbing a crude mixture comprising dinitrotoluene, nitric acid, nitrogen oxides and sulfuric acid obtained in the nitration of toluene after the nitrating acid has been separated off, which comprises two scrubbing steps (SS-I) and (SS-II), wherein i) in a first scrubbing step (SS-I), the crude mixture is extracted with a scrubbing acid I comprising nitric acid, nitrogen oxides and sulfuric acid in a scrub comprising at least one extraction stage, where the scrubbing acid discharged from the first extraction stage (SS-I-1) of the first scrubbing step (SS-I) has a total acid content of from 20 to 40% by weight and a prescrubbed crude mixture is obtained, ii) in a second scrubbing step (SS-II), the prescrubbed crude mixture comprising dinitrotoluene is extracted with a scrubbing acid II in a scrub comprising at least one extraction stage, where the scrubbing acid discharged from the first extraction stage (SS-II-1) of the second scrubbing step (SS-II) has a pH of less than or equal to 4 and a mixture comprising dinitrotoluene which is essentially free of nitric acid, sulfuric acid and nitrogen oxides is obtained.

    摘要翻译： 本发明涉及一种在分离出硝化酸后，除去包含二硝基甲苯，硝酸，氮氧化物和硫酸在硝化硝酸中得到的粗混合物的方法，该方法包括两个洗涤步骤（SS-I）和（SS -II），其中i）在第一洗涤步骤（SS-1）中，粗制混合物用包含硝酸，氮氧化物和硫酸的洗涤酸I在包含至少一个萃取阶段的洗涤中萃取，其中洗涤 从第一洗涤步骤（SS-I）的第一提取阶段（SS-I-1）排出的酸的总酸含量为20至40重量％，得到预混合的粗混合物，ii）在第二次 洗涤步骤（SS-II），包含二硝基甲苯的预先混合的粗混合物在洗涤中用擦洗酸II萃取，其包含至少一个提取阶段，其中从第一提取阶段（SS-II-1）排出的洗涤酸 第二洗涤步骤（SS- II）具有小于或等于4的pH，并且获得基本上不含硝酸，硫酸和氮氧化物的二硝基甲苯的混合物。

    METHOD FOR PRODUCING NITROBENZENE COMPOUND
    2.
    发明申请
    METHOD FOR PRODUCING NITROBENZENE COMPOUND 有权
    生产硝基苯酚化合物的方法

    公开(公告)号：US20140163256A1

    公开(公告)日：2014-06-12

    申请号：US14131106

    申请日：2012-07-04

    申请人： Shinki Tani ,  Nami Yadomatsu ,  Akiko Ikumi ,  Yuuki Hirano ,  Takuya Ido

    发明人： Shinki Tani ,  Nami Yadomatsu ,  Akiko Ikumi ,  Yuuki Hirano ,  Takuya Ido

    IPC分类号： C07C201/06

    CPC分类号： C07C201/06 ,  C07C205/06 ,  C07C205/58

    摘要： A method for producing a nitrobenzene compound represented by general formula (2), wherein R1 and R5 are the same or different, and each is a halogen atom or another functional group, and R2, R3, and R4 are the same or different, and each is a hydrogen atom or another functional group, comprises oxidizing an aniline compound represented by general formula (1), wherein R1, R2, R3, R4, and R5 are the same as described above, with hydrogen peroxide in the presence of a tungsten compound under an acidic condition, followed by oxidation with hydrogen peroxide under a neutral to alkaline condition.

    摘要翻译： 一种制备由通式（2）表示的硝基苯化合物的方法，其中R1和R5相同或不同，并且各自为卤素原子或其它官能团，R2，R3和R4相同或不同， 各自为氢原子或另一官能团，包括将氧化由通式（1）表示的苯胺化合物，其中R1，R2，R3，R4和R5与上述相同，与过氧化氢在钨存在下 在酸性条件下，然后在中性至碱性条件下用过氧化氢氧化。

    Oxidation catalyst
    4.
    发明申请
    Oxidation catalyst 有权
    氧化催化剂

    公开(公告)号：US20100069670A1

    公开(公告)日：2010-03-18

    申请号：US12591266

    申请日：2009-11-13

    申请人： Ken Suzuki

    发明人： Ken Suzuki

    IPC分类号： C07C249/04 ,  C07C201/06

    CPC分类号： B01J31/0237 ,  B01J31/006 ,  B01J2231/70 ,  B01J2231/72 ,  B01J2231/763 ,  C07C249/04 ,  Y02P20/582 ,  C07C251/44

    摘要： An oxidation catalyst for use in the oxidation of a substrate with a molecular oxygen, comprising at least one member selected from the group consisting of a specific hydrazyl radical (such as 2,2-diphenyl-1-picrylhydrazyl) and a specific hydrazine compound (such as 2,2-diphenyl-1-picrylhydrazine). A method for producing a chemical compound, comprising contacting a substrate with a molecular oxygen in the presence of the above-mentioned oxidation catalyst.

    摘要翻译： 一种氧化催化剂，用于氧化分子氧的底物，其包含选自特定的肼基（例如2,2-二苯基-1-苦基肼基）和特定的肼化合物中的至少一种 如2,2-二苯基-1-辛基肼）。 一种化合物的制造方法，其特征在于，在上述氧化催化剂的存在下，使基材与分子氧接触。

    Synthesis of 3-(5-nitrocyclohex-1-enyl) acrylic acid and esters thereof
    5.
    发明申请
    Synthesis of 3-(5-nitrocyclohex-1-enyl) acrylic acid and esters thereof 失效
    3-（5-硝基环己-1-烯基）丙烯酸及其酯的合成

    公开(公告)号：US20080009651A1

    公开(公告)日：2008-01-10

    申请号：US11824246

    申请日：2007-06-29

    申请人： Tiruvettipuram Thiruvengadam ,  Tao Wang ,  John Chiu ,  Jing Liao

    发明人： Tiruvettipuram Thiruvengadam ,  Tao Wang ,  John Chiu ,  Jing Liao

    IPC分类号： C07C61/35 ,  C07C201/06

    CPC分类号： C07C251/44 ,  C07C201/06 ,  C07C249/08 ,  C07C2601/16 ,  C07C205/56 ,  C07C251/42

    摘要： This application discloses provides a process for the introduction of nitro-group functionality into a compound which contains also a site of unsaturation and/or oxygen functionality by direct (one step) oxidation of an oxime functional group mediated by a molybdenum VI/VII peroxo complex, the process comprising: (a) providing a substrate of Formula I containing an oxime functional group;  wherein R1 and R2 are selected independently from linear, branched or cyclic alkyl and linear, branched or cyclic alkenyl groups, optionally substituted, with the proviso that at least one of R1 or R2 contains a carbon/carbon double bond; and (b) contacting said substrate of Formula I with a molybdenum oxidation complex, thereby oxidizing said oxime functional group to a nitro functional group to yield the structure of Formula III. Where R1 and R2 are as defined above.

    摘要翻译： 本申请公开提供了一种通过由钼VI / VII过氧配合物介导的肟官能团的直接（一步）氧化将硝基官能团引入到还含有不饱和位和/或氧官能团位点的化合物的方法 该方法包括：（a）提供含有肟官能团的式I的底物; 其中R 1和R 2独立地选自直链，支链或环状的烷基和直链，支链或环状烯基，任选被取代，条件是至少一个 R 1或R 2 2含有碳/碳双键; 和（b）使式I的底物与钼氧化络合物接触，从而将所述肟官能团氧化为硝基官能团，得到式III的结构。 其中R 1和R 2如上定义。

    Method for producing nitrobenzene by adiabatic nitriding
    6.
    发明授权
    Method for producing nitrobenzene by adiabatic nitriding 有权
    通过绝热氮化生产硝基苯的方法

    公开(公告)号：US09284255B2

    公开(公告)日：2016-03-15

    申请号：US14413277

    申请日：2013-07-23

    申请人： Bayer MaterialScience AG

    发明人： Thomas Knauf ,  Alexandre Racoes ,  Wolfgang Dohmen ,  Antoni Mairata

    IPC分类号： C07C201/00 ,  C07C201/06 ,  C07C201/08

    CPC分类号： C07C201/06 ,  C07C201/08 ,  C07C205/06

    摘要： The invention relates to an adiabatic process for producing nitrobenzene by nitrating benzene with sulphuric acid mixtures and nitric acid mixtures using a stoichiometric excess of benzene and reusing non-reacted benzene, the content of the aliphatic organic compounds in the feed benzene being limited, by the targeted evacuation of aliphatic organic compounds to at least one step in the process, to a content of less than 1.5 mass-%, in relation to the total amount of feed benzene.

    摘要翻译： 本发明涉及通过使用化学计量过量的苯用硝酸混合物和硝酸混合物硝化苯并重新使用未反应的苯来生产硝基苯的绝热方法，所述进料苯中的脂肪族有机化合物的含量受到限制， 将脂肪族有机化合物定向排出至该步骤中的至少一个步骤，其含量相对于进料苯的总量小于1.5质量％。

    Method for producing nitrobenzene by adiabatic nitriding
    7.
    发明授权
    Method for producing nitrobenzene by adiabatic nitriding 有权
    通过绝热氮化生产硝基苯的方法

    公开(公告)号：US09260377B2

    公开(公告)日：2016-02-16

    申请号：US14415788

    申请日：2013-07-23

    申请人： Bayer MaterialScience AG

    发明人： Thomas Knauf ,  Michael Merkel ,  Antoni Mairata

    IPC分类号： C07C201/06 ,  C07C201/08

    CPC分类号： C07C201/06 ,  C07C201/08 ,  C07C205/06

    摘要： The invention provides a continuous adiabatic process for the preparation of nitrobenzene by nitrating benzene with mixtures of sulfuric and nitric acids using a stoichiometric excess of benzene, wherein the content of organic compounds in the circulating sulfuric acid, at least during the start-up period of the production plant, is always kept below 1.0 mass percent, based on the total mass of circulating sulfuric acid. This is preferably achieved by a procedure in which, either after the end or before the beginning of a production cycle, the circulating sulfuric acid is circulated at elevated temperature so that the organics contained in the sulfuric acid, preferably comprising nitrobenzene and traces of benzene, dinitrobenzene and nitrophenols, are separated off in the evaporation apparatus for concentrating the sulfuric acid.

    摘要翻译： 本发明提供了一种连续的绝热方法，用于通过使用化学计量过量的苯将硫与硝酸的混合物硝化苯来制备硝基苯，其中循环硫酸中有机化合物的含量至少在启动期间 基于循环硫酸的总质量，生产厂总是保持在1.0质量％以下。 这优选通过以下程序来实现，其中，在生产周期结束或开始之前循环硫酸在升高的温度下循环，使得包含在硫酸中的有机物，优选包含硝基苯和痕量的苯， 二硝基苯和硝基苯酚在用于浓缩硫酸的蒸发装置中分离出来。

    METHODS FOR PERFORMING ELECTROCHEMICAL NITRATION REACTIONS
    10.
    发明申请
    METHODS FOR PERFORMING ELECTROCHEMICAL NITRATION REACTIONS 有权
    电化学氮化反应的方法

    公开(公告)号：US20090038953A1

    公开(公告)日：2009-02-12

    申请号：US11836009

    申请日：2007-08-08

    申请人： Tedd Edward Lister ,  Robert Vincent Fox

    发明人： Tedd Edward Lister ,  Robert Vincent Fox

    IPC分类号： C25B1/00 ,  C01B21/00 ,  C07C201/06

    CPC分类号： C25B3/00

    摘要： A method for the electrochemical synthesis of dinitro compounds is disclosed. The method comprises using an anode to oxidize an inactive chemical mediator, such as a ferrocyanide (Fe(CN)6−4) ion, to an active chemical mediator or oxidizing agent, such as a ferricyanide (Fe(CN)6−3) ion, in the presence of a differential voltage. The oxidizing agent reacts with a nitro compound and a nitrite ion to form a geminal dinitro compound. The anode may continuously oxidize ferrocyanide to regenerate active ferricyanide, thus keeping sufficient amounts of ferricyanide available for reaction.

    摘要翻译： 公开了二硝基化合物的电化学合成方法。 该方法包括使用阳极氧化非活性化学介质如亚铁氰化物（Fe（CN）6-4）离子到活性化学介质或氧化剂如铁氰化物（Fe（CN）6-3） 离子，存在差分电压。 氧化剂与硝基化合物和亚硝酸根离子反应形成孪晶二硝基化合物。 阳极可以连续氧化亚铁氰化物以再生活性铁氰化物，从而保持足够量的铁氰化物可用于反应。