公开(公告)号：US4560800A

公开(公告)日：1985-12-24

申请号：US650881

申请日：1984-09-17

Applicant: Kiran R. Bakshi ,  Adrian D'Souza ,  Edward T. Sabourin

Inventor： Kiran R. Bakshi ,  Adrian D'Souza ,  Edward T. Sabourin

IPC: C07C201/16 ,  C07C45/61

CPC classification number: C07C201/16 ,  C07C201/08

Abstract: A process for the preparation and recovery of m,m'-dinitrobenzophenone and which comprises reacting benzophenone with nitric acid in oleum; adjusting the reaction product to a water content from 12 to 30 weight percent; and extracting the m,m'-dinitrobenzophenone with a chlorinated hydrocarbon solvent.

Abstract translation: 一种制备和回收m，m'-二硝基二苯甲酮的方法，其包括使二苯甲酮与硝酸在发烟硫酸中反应; 将反应产物调节至12至30重量％的水含量; 并用氯化烃溶剂萃取m，m'-二硝基二苯甲酮。

公开(公告)号：US4479019A

公开(公告)日：1984-10-23

申请号：US582083

申请日：1984-02-21

Applicant: Gerd Leston

Inventor： Gerd Leston

IPC: C07C201/16 ,  C07C205/22 ,  C07C79/32

CPC classification number: C07C201/16 ,  C07C205/22

Abstract: A process is disclosed for separating nitrated phenolic compounds from other nitrated and unnitrated phenolics by treating a mixture of the phenolics with a metal halide salt. The metal halide salt preferentially forms a complex with one of the phenolics over other related phenolics in the mixture. The preferentially-formed complex of one of the phenolics may then be isolated from the mixture and the complex decomposed to provide a product substantially enriched in, or substantially entirely composed of, one phenolic. The process is particularly suitable for resolving a mixture comprising phenol or cresol from their ortho-nitrated derivatives, or a mixture of two isomeric nitrated phenols or cresols or a mixture of mono-and dinitrated phenols or cresols.

Abstract translation: 公开了通过将酚类与金属卤化物盐的混合物进行处理来分离硝化酚类化合物与其它硝化和未硝化酚醛树脂的方法。 与混合物中的其它相关酚类物质相比，金属卤化物盐优先与酚类之一形成络合物。 然后可以从混合物中分离一种酚类的优先形成的络合物，并且复合物被分解以提供基本上富含或完全由一种酚类组成的产物。 该方法特别适用于从其邻硝化衍生物或两种异构硝化酚或甲酚的混合物或单硝酸盐和二硝基苯酚或甲酚的混合物中分离出包含苯酚或甲酚的混合物。

公开(公告)号：US4454361A

公开(公告)日：1984-06-12

申请号：US448653

申请日：1982-12-10

Applicant: Suseelan R. Pookote ,  Melvin R. Bagley

Inventor： Suseelan R. Pookote ,  Melvin R. Bagley

IPC: C07C201/16 ,  C07C79/12

CPC classification number: C07C201/16

Abstract: Mixtures of para-nitrochlorobenzene crystals and a liquid, ordinarily comprising the mother liquor of the crystals are continuously separated in one or more cylindrical presses in at least two stages. Reduction of the interstitial space causes the mother liquor to be forced out of the drainage aperatures thus purifying the crystals.

Abstract translation: 通常包含晶体母液的对硝基氯苯晶体和液体的混合物在至少两个阶段中在一个或多个圆柱形压力机中连续分离。 间隙空间的减少导致母液被排出排水孔，从而净化晶体。

公开(公告)号：US4434304A

公开(公告)日：1984-02-28

申请号：US434460

申请日：1982-10-15

Applicant: Albert A. DeFusco, Jr. ,  Arnold T. Nielsen ,  Ronald L. Atkins

Inventor： Albert A. DeFusco, Jr. ,  Arnold T. Nielsen ,  Ronald L. Atkins

IPC: C07C205/24 ,  C07C79/30

CPC classification number: C07C201/08 ,  C07C201/16

Abstract: A one pot process for the preparation of trinitrophloroglucinol by the addition of a nitric acid and sulfuric acid mixture to phloroglucinol in sulfuric acid where the nitric acid and phloroglucinol are present in stoichiometric amounts.

Abstract translation: 通过将硝酸和硫酸混合物加入硝酸和间苯三酚在硫酸中的硝酸和间苯三酚以化学计量的量存在，制备三硝基间苯三酚的一锅法。

公开(公告)号：US4416734A

公开(公告)日：1983-11-22

申请号：US262078

申请日：1981-05-11

Applicant: Martin J. Jacobs

Inventor： Martin J. Jacobs

IPC: B01D3/36 ,  B01D9/00 ,  B01D12/00 ,  C07C201/16 ,  C07C79/18

CPC classification number: C07C201/16 ,  B01D12/00 ,  B01D3/36 ,  B01D9/0004

Abstract: A process for the separation of a dissolved solid from an aqueous solution containing it, comprising the steps of (a) adding thereto an organic liquid which is a poor solvent for the dissolved solid and which forms an azeotrope with water, (b) subjecting the mixture to azeotropic distillation to separate at least a major portion of the water, (c) cooling the mixture thereby causing substantially complete separation of the dissolved solids, and (d) separating same from the mother liquor.

Abstract translation: 一种从含有溶解的固体的水溶液中分离溶解的固体的方法，包括以下步骤：（a）向其中加入作为溶解的固体的不良溶剂并与水形成共沸物的有机液体，（b） 混合物以共沸蒸馏以分离至少大部分水，（c）冷却混合物，从而使溶解的固体基本上完全分离，和（d）将其从母液中分离出来。

公开(公告)号：US4338473A

公开(公告)日：1982-07-06

申请号：US151286

申请日：1980-05-19

Applicant: Kurt Habig ,  Konrad Baessler ,  Lothar Schulz ,  Heinz Schutte

Inventor： Kurt Habig ,  Konrad Baessler ,  Lothar Schulz ,  Heinz Schutte

IPC: C07B43/02 ,  C07C201/16 ,  C07C76/02 ,  C07C79/10 ,  C07C79/12

CPC classification number: C07C201/16 ,  C07B43/02

Abstract: Nitrosation agent(s), contained as by-products in nitrated aromatic compounds after nitration with nitric acid or nitration acid, are removed by a water treatment, wherein the water is distilled off at least partially in vapor form, advantageously under reduced pressure. In the further reaction of the nitrocompounds treated in this manner undesired nitrosamines are practically not formed. The process is especially suitable for the manufacture of 4-di-n-propylamino-3,5-dinitrobenzotrifluoride (Trifluralin), a valuable herbicide, substantially free from nitrosamine(s).

Abstract translation: 通过水处理除去在用硝酸或硝酸酸硝化之后在硝化芳族化合物中作为副产物包含的亚硝化剂，其中有利地在减压下至少部分地以蒸气形式蒸馏掉水。 在以这种方式处理的硝基化合物的进一步反应中，实际上不形成不希望的亚硝胺。 该方法特别适用于生产基本上不含亚硝胺的有价值的除草剂4-二正丙基氨基-3,5-二硝基三氟甲苯（Trifluralin）。

公开(公告)号：US4288615A

公开(公告)日：1981-09-08

申请号：US122957

申请日：1980-02-21

Applicant: John H. Bright

Inventor： John H. Bright

IPC: C07C201/16 ,  C07C51/43

CPC classification number: C07C201/16

Abstract: 3-Nitrobenzoic acid is recovered from a mixture of 2-, 3- and 4-nitrobenzoic acids by basifying to a pH of 8-12 and then adding an acid to reduce the pH to 1.5-3.5 to precipitate the desired compound.

Abstract translation: 通过碱化至8-12的pH从2-，3-和4-硝基苯甲酸的混合物中回收3-硝基苯甲酸，然后加入酸将pH降至1.5-3.5以沉淀所需化合物。

公开(公告)号：US4155921A

公开(公告)日：1979-05-22

申请号：US850509

申请日：1977-11-10

Applicant: Walter Hohmann ,  Klaus Wunderlich

Inventor： Walter Hohmann ,  Klaus Wunderlich

IPC: C07C205/47 ,  C07C67/00 ,  C07C201/00 ,  C07C201/16 ,  C07C49/68

CPC classification number: C07C201/16 ,  C07C205/47

Abstract: A process has been invented for the isolation of 1,6- and 1,7-dinitroanthraquinone by treating mixtures containing these isomers with nitrobenzene.

Abstract translation: 已经发明了通过用硝基苯处理含有这些异构体的混合物来分离1,6-和1,7-二硝基蒽醌的方法。

公开(公告)号：US4147882A

公开(公告)日：1979-04-03

申请号：US812829

申请日：1977-07-05

Applicant: Johann G. D. Schulz ,  Edward T. Sabourin

Inventor： Johann G. D. Schulz ,  Edward T. Sabourin

IPC: C07C51/27 ,  C07C205/57 ,  C08J9/08 ,  C07C51/33

CPC classification number: C08J9/08 ,  C07C201/16 ,  C07C51/27

Abstract: A mixture of polycyclic aromatic polycarboxylic acids that is substantially insoluble in acetone and substantially insoluble in water and a process for preparing the mixture.

Abstract translation: 基本上不溶于丙酮并基本上不溶于水的多环芳族多元羧酸的混合物和制备该混合物的方法。

公开(公告)号：US4123615A

公开(公告)日：1978-10-31

申请号：US771369

申请日：1977-02-23

Applicant: Laszlo Levai ,  Gyula Mikite

Inventor： Laszlo Levai ,  Gyula Mikite

IPC: C07B61/00 ,  B01J23/00 ,  C07C67/00 ,  C07C201/00 ,  C07C201/16 ,  C07C205/14 ,  C07C205/16 ,  C07C76/02

CPC classification number: C07C201/12 ,  C07C201/16

Abstract: The invention relates to a novel process for producing the threo- and erythro-isomers of 1-phenyl-2-nitro-1,3-propanediol through the aldol-type alkaline condensation of benzaldehyde and nitroethanol, wherein the reaction mixture is acidified and, if desired, the isomers are separated from the obtained isomer mixture and the obtained isomers are transformed into each other through epimerization, characterized in that the condensation and, if desired, also the epimerization are carried out in the presence of catalytical amounts of an alkaline hydroxide.The process according to the invention makes it possible to produce 1-phenyl-2-nitro-1,3-propanediol, an intermediate of the antibiotic chloramphenicol, in high yields, and in an extremely advantageous way which can be carried out simply and economically even on an industrial scale.

Abstract translation: 本发明涉及一种通过苯甲醛和硝基乙醇的醛醇型碱性缩合生产1-苯基-2-硝基-1,3-丙二醇的苏 - 和红 - 异构体的新方法，其中反应混合物被酸化， 如果需要，将异构体与获得的异构体混合物分离，所得异构体通过差向异构体彼此转化，其特征在于缩合反应，如果需要，还可以在催化量的碱性氢氧化物存在下进行差向异构化 。