公开(公告)号：US3981933A

公开(公告)日：1976-09-21

申请号：US605398

申请日：1975-08-18

Applicant: Newell C. Cook ,  Gary C. Davis

Inventor： Newell C. Cook ,  Gary C. Davis

IPC: C07B43/02 ,  C07C201/08 ,  C07C205/06 ,  C07C205/12 ,  C07C205/23 ,  C07C205/38 ,  C07C205/45 ,  C07C205/57 ,  C07C79/10

CPC classification number: C07C317/00 ,  C07B43/02 ,  C07C201/08 ,  C07C2103/20

Abstract: Nitrated derivatives of aromatic compounds are obtained by contacting the latter, in the presence of methylene chloride as a reaction medium, with concentrated nitric acid in the presence of concentrated sulfuric acid, and thereafter isolating the formed nitro derivatives.

Abstract translation: 芳族化合物的硝化衍生物通过在浓硫酸存在下，在二氯甲烷作为反应介质存在下与浓硝酸接触而获得，然后分离所形成的硝基衍生物。

公开(公告)号：US3954892A

公开(公告)日：1976-05-04

申请号：US340903

申请日：1973-03-13

Applicant: Andre Perrin

Inventor： Andre Perrin

IPC: C07C205/22 ,  C07C67/00 ,  C07C201/00 ,  C07C201/16 ,  C07C79/26

CPC classification number: C07C201/16 ,  C07C201/08 ,  C07C205/22

Abstract: In the nitration of phenol with nitric acid, decantation of the residual acid, and steam distillation of ortho-nitrophenol to leave an aqueous distillation residue of para-nitrophenol, a cleaner purer crystalline para-nitrophenol product is obtained by cooling the hot distillation residue when it contains at least 0.5% of sodium bisulphite and is at pH 5.4 to 6.4.

Abstract translation: 在用硝酸硝化苯酚的同时，将残余的酸进行硝酸化，并将邻硝基苯酚蒸汽蒸馏除去对硝基苯酚的水蒸馏残余物，通过冷却热蒸馏残渣得到更清洁的纯的对硝基苯酚产物， 它含有至少0.5％的亚硫酸氢钠，pH在5.4至6.4。

公开(公告)号：US3929841A

公开(公告)日：1975-12-30

申请号：US48521374

申请日：1974-07-02

Applicant: BASF AG

Inventor： ACKERMANN OTTO ,  EILINGSFELD HEINZ

IPC: C07C205/47 ,  C07C67/00 ,  C07C201/00 ,  D07B3/04 ,  C09B1/00

CPC classification number: D07B3/04 ,  C07C201/08 ,  C07C201/16 ,  C07C2603/24 ,  C07C205/47

Abstract: 1,5-DINITROANTHRAQUINONE IS ISOLATED FROM A NITRATION MIXTURE CONTAINING DINITROANTHRAQUINONES BY ALLOWING N-methylpyrrolidone to act on the nitroanthraquinone mixture. From 10 to 45% by weight of the nitroanthraquinone mixture remains undissolved and the undissolved material is separated from the solution. A dinitroanthraquinone is isolated which contains from 75 to 95% by weight of 1,5-dinitroanthraquinone and practically no Beta dinitroanthraquinones.

Abstract translation: 通过允许N-甲基吡咯烷酮作用于硝基蒽醌混合物，从含有四氮杂环戊烷的硝化混合物中分离出1,5-四硝基四氢喹啉。 10至45重量％的硝基蒽醌混合物保持未溶解，并且将未溶解的材料与溶液分离。 分离出二硝基蒽醌，其含有75至95重量％的1,5-二硝基蒽醌，实际上不含β-二硝基蒽醌。

公开(公告)号：US3928476A

公开(公告)日：1975-12-23

申请号：US44415874

申请日：1974-02-20

Applicant: TEIJIN LTD

Inventor： SHIMADA KEIZO ,  NISHIKAWA TAKEO ,  HARADA TOSHIAKI ,  NAGAHAMA SHIZUO

IPC: C07B61/00 ,  B01J21/00 ,  B01J27/00 ,  B01J27/02 ,  B01J27/16 ,  B01J37/20 ,  B01J37/28 ,  C07C67/00 ,  C07C201/00 ,  C07C201/08 ,  C07C205/12 ,  C07C79/12

CPC classification number: B01J37/20 ,  B01J27/02 ,  B01J27/16 ,  B01J37/28 ,  C07C201/08 ,  C07C205/12

Abstract: A process for nitrating halogenated benzene derivatives, which comprizes reacting a halogenated benzene devirative with nitric acid in the liquid phase in the presence of a catalyst composed of an oxyacid of sulfur or phosphorus supported on silica-alumina and/or alumina.

Abstract translation: 一种硝化卤代苯衍生物的方法，其包括在负载在二氧化硅 - 氧化铝和/或氧化铝上的由硫或磷的含氧酸组成的催化剂存在下，在液相中使卤代苯脱附物与硝酸反应。

公开(公告)号：US3910995A

公开(公告)日：1975-10-07

申请号：US39568173

申请日：1973-09-10

Applicant: HOOKER CHEMICALS PLASTICS CORP

Inventor： GELFAND SAMUEL

IPC: C07C205/58 ,  C07C79/46

CPC classification number: C07C205/58 ,  C07C201/08

Abstract: A novel process for the preparation of 2,5-dihalo-3-nitrobenzoic acid and derivatives thereof is provided. The process comprises treating a compound of the formula

WHEREIN X and Y are halogen, and Z is selected from the group consisting of halogen and anhydride, namely 2,5-dihalobenzoyloxywithout an intermediate hydrolysis step, with a sulfur-containing compound selected from the group of sulfur trioxide, oleum, chloro-sulfonic acid and mixtures thereof and a nitrating agent to produce 2,5-dihalo-3-nitrobenzoic acid. The process gives an increased yield of the desired 3-nitro- isomer product thereby decreasing the amount of undesired by-product isomers.

Abstract translation: 提供了一种制备2,5-二卤代-3-硝基 - 苯甲酸及其衍生物的新方法。 该方法包括处理式WHEREIN X和Y为卤素的化合物，Z选自卤素和酸酐，即不含中间水解步骤的2,5-二卤代苯甲酰氧基，其中含硫化合物选自 三氧化硫，发烟硫酸，氯磺酸及其混合物的组和硝化剂以产生2,5-二卤代-3-硝基苯甲酸。 该方法产生所需3-硝基异构体产物的产率增加，从而减少不需要的副产物异构体的量。

公开(公告)号：US3862209A

公开(公告)日：1975-01-21

申请号：US25278072

申请日：1972-05-12

Applicant: MOBIL OIL CORP

Inventor： THEISSEN ROBERT JAMES

IPC: C07C205/59 ,  C07C101/54

CPC classification number: C07C201/08 ,  C07C201/12 ,  C07C205/58 ,  C07C205/59

Abstract: Improved process for the synthesis of certain nitro phenoxybenzoic acid esters in which high yield, high purity, herbicidally effective compounds are obtained. In general the improvement comprises: 1. ESTERIFICATION OF A HALOBENZOYL HALIDE WITH ISOPROPANOL THEREBY FACILITATING SEPARATION OF ISOMERIC IMPURITIES FROM THE DESIRED ISOPROPYL-NITROBENZOATE ESTER INTERMEDIATE. 2. TRANSESTERIFICATION OF A PHENOXY DERIVATIVE OF SAID ESTER TO THE DESIRED PHENOXYBENZOIC ACID ESTER.

Abstract translation: 用于合成某些硝基苯氧基苯甲酸酯的改进方法，其中获得高产率，高纯度，除草有效的化合物。 一般来说，改进包括：

公开(公告)号：US3836547A

公开(公告)日：1974-09-17

申请号：US26042772

申请日：1972-06-07

Applicant: SANDOZ LTD

Inventor： TOTH I

IPC: C07B43/02 ,  C07C201/08 ,  C07C205/47 ,  C09B1/00

CPC classification number: C07C201/08 ,  C07B43/02 ,  C07C2603/24 ,  C07C205/47

Abstract: DISCLOSED IS A NITRATION PROCESS CARRIED OUT IN CONCENTRATED NITRIC ACID AND IN WHICH THE RATE OF REACTION OF THE NITRATION PROCESS IS REDUCED BY THE ADDITION OF AN INHIBITOR, THE INHIBITOR HAVING A BASICITY GREATER THAN THAT OF THE NO30 ION AND BEING STABLE UNDER THE REATION CONDITIONS, E.G. BEING THE NITRITE OR PHOSPHATE ION. THE PROCESS IS USEFUL IN THE PARTIAL NITRATION OF COMPOUNDS HAVING A PLURALITY OF SITES SUSCEPTIBLE TO NITRATION, BEING PARTICULARLY USEFUL IN THE PRODUCTION OF 1-NITRO-ANTHRAQUINONE FROM ANTHRAQUINONE.

公开(公告)号：US3721713A

公开(公告)日：1973-03-20

申请号：US3721713D

申请日：1970-04-10

Applicant: IND DYESTUFF CO

Inventor： BLOOM A

IPC: C07C205/45 ,  C07C49/76

CPC classification number: C07C205/45 ,  C07C201/08 ,  C07C2603/18

Abstract: 2,4,7-TRINITROFLUORENONE, PREPARED BY NITRATING FLUORENONE WITH A MIXTURE OF NITRIC AND SULFURIC ACIDS, WITHOUT REFLUXING, IS OBTAINED IN HIGH PURITY BY ADDITION OF WATER TO THE REACTION MASS THEREBY PRECIPITATING IT FROM SOLUTION WHILE LEAVING DISSOLVED ISOMERS AND OTHER NITRATION PRODUCTS.

公开(公告)号：US3703546A

公开(公告)日：1972-11-21

申请号：US3703546D

申请日：1968-10-24

Applicant: AMCHEM PROD

Inventor： LEAPER JOSEPH MICHAEL FARADAY ,  RAMAN HARVEY PETER JOHN

IPC: C07C63/70 ,  C07C205/58 ,  C07C101/54

CPC classification number: C07C67/14 ,  C07C201/08 ,  C07C201/16 ,  C07C205/58 ,  C07C69/76

Abstract: 3-AMINO-2,5-DICHLOROBENZOIC ACID IS PREPARED IN HIGH YIELD BY CHLORINATING BENZOYLCHLORIDE AND ESTERIFYING THE RESULTING MIXTURE, SEPARATING THE DESIRED 2,5-DICHLORO ISOMER FROM THE MIXTURE BY FREEZE CRYSTALLIZATION, NITRATING AND ISOLATING 3-NITRO-2,5-DICHLOROBENZOIC ACID FROM THE MIXTURE OF NITRO ISOMERS BY ACID HYDROLYSIS AND TREATING WITH A REDUCING AGENT.

公开(公告)号：US3694513A

公开(公告)日：1972-09-26

申请号：US3694513D

申请日：1970-06-08

Applicant: DOW CHEMICAL CO

Inventor： TOBEY STEPHEN W ,  LOURANDOS MARILYN Z

IPC: C07C205/23 ,  C07C79/24

CPC classification number: C07C201/08 ,  C07C205/23

Abstract: Alkylphenols are nitrated with nitric acid in the presence of a secondary or tertiary alcohol, a secondary alkyl nitrate, an aldehyde or a ketone. Use of such inhibitor decreases the quantity of oxidation products formed, especially quinone formation, and increases the conversion of the starting phenols to the desired nitrated products.

Abstract translation: 在二级或叔醇，仲硝酸烷基酯，醛或酮的存在下，用硝酸硝化烷基酚。 使用这种抑制剂可减少形成的氧化产物的数量，特别是醌的形成，并增加起始酚转化为所需的硝化产物。