公开(公告)号：US4339618A

公开(公告)日：1982-07-13

申请号：US160254

申请日：1980-06-17

Applicant: Manfred Rosner

Inventor： Manfred Rosner

IPC: C07C201/08 ,  C07C205/57 ,  C07C76/02 ,  C07B11/00 ,  C07C79/10 ,  C07C79/12 ,  C07C79/46

CPC classification number: C07C201/08 ,  C07C231/12

Abstract: The invention relates to a process for the production of nitroaryl compounds which are at least monosubstituted, by nitration of aryl compounds which are at least monosubstituted, which process comprises carrying out the nitration in a two-phase system which consists of an inorganic phase consisting of sulfuric acid having a concentration of at least 80% and an organic phase consisting of an inert organic liquid in which the nitration product is almost insoluble in the presence of sulfuric acid, at a temperature in the range from -30.degree. to 100.degree. C., with nitric acid as nitrating agent.The novel process can be generally employed for aryl compounds which are at least monosubstituted. The corresponding nitroaryl compounds are obtained in high yield and isomeric purity.

Abstract translation: 本发明涉及通过硝化至少单取代的芳基化合物至少单取代的硝基芳基化合物的制备方法，该方法包括在两相体系中进行硝化，所述两相体系由以下组成的无机相组成：无机相 浓度至少为80％的硫酸和由惰性有机液体组成的有机相，其中硝化产物在硫酸存在下几乎不溶于-30℃至100℃的温度。 ，用硝酸作为硝化剂。 该方法通常可用于至少单取代的芳基化合物。 以高产率和异构纯度获得相应的硝基芳基化合物。

公开(公告)号：US3966830A

公开(公告)日：1976-06-29

申请号：US523049

申请日：1974-11-12

Applicant: Keizo Shimada ,  Takeo Nishikawa ,  Toshiaki Harada ,  Shizuo Nagahama

Inventor： Keizo Shimada ,  Takeo Nishikawa ,  Toshiaki Harada ,  Shizuo Nagahama

IPC: B01J27/053 ,  B01J37/20 ,  B01J37/24 ,  C07C201/08 ,  C07C205/12 ,  C07C79/12

CPC classification number: B01J37/20 ,  B01J27/053 ,  B01J37/24 ,  C07C201/08

Abstract: A process for nitrating halogenated benzene derivatives which comprises reacting in the vapor phase a halogenated benzene derivative with at least one member selected from the group consisting of nitric acid, nitrogen dioxide and nitrogen pentoxide in the presence of at least one solid inorganic oxide selected from the group consisting of silica, alumina and silica-alumina.

Abstract translation: 一种硝化卤代苯衍生物的方法，其包括在至少一种固体无机氧化物的存在下，在气相中使卤代苯衍生物与选自硝酸，二氧化氮和五氧化二氮的至少一种成员反应，所述固体无机氧化物选自 由二氧化硅，氧化铝和二氧化硅 - 氧化铝组成的组。

公开(公告)号：US3928395A

公开(公告)日：1975-12-23

申请号：US40075873

申请日：1973-09-26

Applicant: CIBA GEIGY AG

Inventor： SEHA ZDENEK ,  SOMLO TIBOR

IPC: C07C311/39 ,  C07C67/00 ,  C07C201/00 ,  C07C201/08 ,  C07C205/06 ,  C07C205/45 ,  C07C205/47 ,  C07C301/00 ,  C07C303/40 ,  C07C313/00 ,  C07C315/04 ,  C07C317/14 ,  C07C79/37

CPC classification number: C07C201/08 ,  C07C2603/24 ,  C07C205/06 ,  C07C205/47

Abstract: The present invention provides a new process for the nitration of aromatic compounds, wherein the nitration is carried out with concentrated nitric acid, nitrogen oxides, acetyl nitrate, or a mixture of concentrated nitric acid and acetic acid, sulphuric acid or acetic anhydride, in the presence of a dipolar aprotic solvent that is inert towards the nitrating agent, and wherein the reaction is halted by diluting the mixture with the dipolar aprotic solvent after the desired degree of nitration has been attained.

Abstract translation: 本发明提供了一种用于硝化芳族化合物的新方法，其中硝化是用浓硝酸，氮氧化物，乙酰硝酸盐或浓硝酸和乙酸，硫酸或乙酸酐的混合物在 存在对硝化剂是惰性的偶极非质子溶剂，并且其中通过在达到所需的硝化程度之后用偶极非质子溶剂稀释该混合物来停止反应。

公开(公告)号：US3836601A

公开(公告)日：1974-09-17

申请号：US24742572

申请日：1972-04-25

Applicant: SANDOZ LTD

Inventor： FREY W ,  YARBOROUGH W

IPC: C07B43/02 ,  C07C201/08 ,  C07C205/47 ,  C07C79/10 ,  C07C79/36

CPC classification number: C07C205/47 ,  C07B43/02 ,  C07C201/08 ,  C07C2603/24 ,  Y02P20/582

Abstract: DISCLOSED IS A NITRATION PROCESS IN WHICH THE STARTING MATERIAL, E.G. ANTHRAQUINONE , IS NITRATED USING CONCENCENTRATED NITRIC AND IN WHICH THE RATE OF REACTION IS REDUCED BY THE ADDITION OF DILUTE NITRIC ACID, THE AMOUNTS OF CONCENTRATED AND DILUTE ACIDS USED BEING SUCH THAT THE CONCENTRATION OF NITRIC ACID IN THE RESULTING RESIDUAL ACID SOLUTION IS GREATER THAN AT THE AZEOTROPIC POINT OF SIAD SOLUTION, THE SOLUTION SUBSEQUENTLY BEING FRACTIONATED TO YIELD A CONCENRATED NITRIC ACID FRACTION AND A DILUTE NITRIC AID FRACTION, WHICH FRACTION CAN CONVENIENTLY BE RECYCLED, THE FORMER TO NITRATE FURTHER STARTING MATERIAL, THE LATTER TO RWDUCE THE RATE OF NITRATION OF THE FURTHER STARTING MATERIAL.

公开(公告)号：US3378596A

公开(公告)日：1968-04-16

申请号：US56043766

申请日：1966-06-27

Applicant: COMMERCIAL SOLVENTS CORP

Inventor： TOOPS JR EMORY E ,  EGLY RICHARD S

IPC: B01J19/00 ,  C07C201/08

CPC classification number: B01J19/0013 ,  B01J2219/00123 ,  B01J2219/00159 ,  B01J2219/00162 ,  B01J2219/00166 ,  C07C201/08 ,  C07C2601/14 ,  C07C205/02 ,  C07C205/06 ,  C07C205/05

公开(公告)号：US3000966A

公开(公告)日：1961-09-19

申请号：US31265152

申请日：1952-10-01

Applicant: AEROJET GENERAL CO

Inventor： KARL KLAGER

IPC: C07C201/08 ,  C07C205/02 ,  C07C205/05

CPC classification number: C07C201/08 ,  C07C205/02

公开(公告)号：US2739174A

公开(公告)日：1956-03-20

申请号：US24573651

申请日：1951-09-08

Applicant: EASTMAN KODAK CO

Inventor： ROSS DONALD V

IPC: C07C201/08 ,  C07C205/06

CPC classification number: C07C201/08 ,  C07C205/06

公开(公告)号：US2400904A

公开(公告)日：1946-05-28

申请号：US51935044

申请日：1944-01-22

Applicant: DU PONT

Inventor： BATCHELDER GEORGE W ,  NAGLE WESLEY M ,  VYVERBERG JOHN C ,  WILLIS JAMES M

IPC: C07C201/08 ,  C07C205/06

CPC classification number: C07C201/08 ,  C07C205/06

公开(公告)号：US2314212A

公开(公告)日：1943-03-16

申请号：US33141940

申请日：1940-04-24

Applicant: DU PONT

Inventor： FELIX HENNION GEORGE

IPC: C07B43/02 ,  C07C201/08 ,  C07C205/06 ,  C07C205/45 ,  C07C205/57

CPC classification number: C07B43/02 ,  C07C201/08 ,  C07C2603/54 ,  C07C205/06 ,  C07C205/45 ,  C07C205/57

公开(公告)号：US2256999A

公开(公告)日：1941-09-23

申请号：US26052139

申请日：1939-03-08

Applicant: DU PONT

Inventor： BERT CASTNER JAMES

IPC: C07B43/02 ,  C07C201/08 ,  C07C205/06 ,  C07C205/12

CPC classification number: C07B43/02 ,  C07C201/08 ,  C07C205/06 ,  C07C205/12