FR2367733A1 - ANTHRAQUINONE MONONITRATION PROCESS - Google Patents

ANTHRAQUINONE MONONITRATION PROCESS

Info

Publication number
FR2367733A1
FR2367733A1 FR7731061A FR7731061A FR2367733A1 FR 2367733 A1 FR2367733 A1 FR 2367733A1 FR 7731061 A FR7731061 A FR 7731061A FR 7731061 A FR7731061 A FR 7731061A FR 2367733 A1 FR2367733 A1 FR 2367733A1
Authority
FR
France
Prior art keywords
anthraquinone
sulfuric acid
weight ratio
mononitration
nitric acid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7731061A
Other languages
French (fr)
Other versions
FR2367733B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Publication of FR2367733A1 publication Critical patent/FR2367733A1/en
Application granted granted Critical
Publication of FR2367733B1 publication Critical patent/FR2367733B1/fr
Granted legal-status Critical Current

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

La présente invention concerne un procédé de préparation de 1-nitroanthraquinone, avec un rendement élevé, par mononitration de l'anthraquinone par des mélanges acide nitrique/ acide sulfurique. On nitre de l'anthraquinone par un mélange acide nitrique/acide sulfurique, pour lequel le rapport en poids de l'acide nitrique par rapport à l'acide sulfurique est d'environ 1 : 1 jusqu'à environ 2 : 1, pour lequel le rapport en poids de l'acide sulfurique par rapport à l'anthraquinone est d'environ 0,5 : 1 jusqu'à environ 1 : 1 et pour lequel le rapport en poids de l'acide sulfurique par rapport à l'eau est d'environ 2,5 : 1 jusqu'à environ 5,5 : 1, en rapportant ces rapports en poids à la somme des produits introduits, à des températures comprises entre 45 et 70 degrés C, jusqu'à ce que la teneur en anthraquinone par rapport à la somme des composés de l'anthraquinone soit inférieure à 3 % en poids. La 1-nitroanthraquinone est un produit intermédiaire industriel important qui peut, par exemple, être utilisé pour la préparation de 1-aminoanthraquinone, à partir de laquelle on prépare de nombreux colorants du type anthraquinone.The present invention relates to a process for the preparation of 1-nitroanthraquinone, with a high yield, by mononitration of anthraquinone with nitric acid / sulfuric acid mixtures. Anthraquinone is nitrated with a nitric acid / sulfuric acid mixture, for which the weight ratio of nitric acid relative to sulfuric acid is from about 1: 1 to about 2: 1, for which the weight ratio of sulfuric acid to anthraquinone is about 0.5: 1 up to about 1: 1 and for which the weight ratio of sulfuric acid to water is from about 2.5: 1 to about 5.5: 1, taking these weight ratios to the sum of the products introduced, at temperatures between 45 and 70 degrees C, until the content of anthraquinone relative to the sum of the anthraquinone compounds is less than 3% by weight. 1-Nitroanthraquinone is an important industrial intermediate which can, for example, be used for the preparation of 1-aminoanthraquinone, from which many anthraquinone-type dyes are prepared.

FR7731061A 1976-10-15 1977-10-14 ANTHRAQUINONE MONONITRATION PROCESS Granted FR2367733A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762646649 DE2646649C3 (en) 1976-10-15 1976-10-15 Process for the mononitration of anthraquinone

Publications (2)

Publication Number Publication Date
FR2367733A1 true FR2367733A1 (en) 1978-05-12
FR2367733B1 FR2367733B1 (en) 1981-05-08

Family

ID=5990573

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7731061A Granted FR2367733A1 (en) 1976-10-15 1977-10-14 ANTHRAQUINONE MONONITRATION PROCESS

Country Status (10)

Country Link
JP (1) JPS5350151A (en)
AT (1) AT350543B (en)
BE (1) BE859719A (en)
BR (1) BR7706874A (en)
CA (1) CA1106368A (en)
CH (1) CH633770A5 (en)
DE (1) DE2646649C3 (en)
FR (1) FR2367733A1 (en)
GB (1) GB1553333A (en)
IN (1) IN146815B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104030927B (en) * 2014-06-18 2016-06-22 江苏亚邦染料股份有限公司 A kind of method with metal modified molecular screen for catalyst preparing 1-nitroanthraquinone
CN114149326A (en) * 2021-12-14 2022-03-08 江苏亚邦染料股份有限公司 Method for preparing 1-nitroanthraquinone by using supergravity nitration reactor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2155660A5 (en) * 1971-10-07 1973-05-18 Sumitomo Chemical Co
FR2240207A1 (en) * 1973-08-10 1975-03-07 Ciba Geigy Ag Pure 1-nitroanthraquinone (derivs) prodn - by nitrating anthraquinone (derivs) in hydrofluoric acid, for use in dye mfr

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2155660A5 (en) * 1971-10-07 1973-05-18 Sumitomo Chemical Co
FR2240207A1 (en) * 1973-08-10 1975-03-07 Ciba Geigy Ag Pure 1-nitroanthraquinone (derivs) prodn - by nitrating anthraquinone (derivs) in hydrofluoric acid, for use in dye mfr

Also Published As

Publication number Publication date
DE2646649A1 (en) 1978-04-20
DE2646649C3 (en) 1982-01-28
JPS5350151A (en) 1978-05-08
CH633770A5 (en) 1982-12-31
AT350543B (en) 1979-06-11
FR2367733B1 (en) 1981-05-08
ATA731877A (en) 1978-11-15
JPS622580B2 (en) 1987-01-20
IN146815B (en) 1979-09-15
BR7706874A (en) 1978-07-18
DE2646649B2 (en) 1981-01-08
CA1106368A (en) 1981-08-04
BE859719A (en) 1978-04-14
GB1553333A (en) 1979-09-26

Similar Documents

Publication Publication Date Title
FR2400501A1 (en) CONTINUOUS ADIABATIC PROCESS FOR THE MONONITRATION OF BENZENE
ES447949A1 (en) Process for the production of aromatic mononitro compounds
FR2367733A1 (en) ANTHRAQUINONE MONONITRATION PROCESS
ES433488A1 (en) Process for separating 1,5-dinitroanthraquinone and 1,8-dinitroanthraquinone from dinitroanthraquinone mixtures
FR2356619A1 (en) PROCESS FOR PURIFICATION OF CRUDE DIBENZYLIDENESORBITOL
GB1353410A (en) Process for preparing a nitroanthraquinone
FR2385684A1 (en) PROCESS FOR PREPARING 1-AMINO-2-BROMO-4-HYDROXYANTHRAQUINONE
DE3168254D1 (en) Water removal in a process for continuous nitration of a nitratable aromatic compound
Dickey et al. Fluorinated Aminoanthraquinone Dyes
US3931347A (en) Purification of dinitrotoluene
CA1121348A (en) Method for preparing 5 and 6-nitro derived 1,2,3,4- tetrahydroanthraquinone from 1,2,3,4,4a,9a-hexahydro- 9,10 anthracenedione
ES8105257A1 (en) Process for the preparation of substituted nitroaryl compounds.
JPS5430145A (en) Preparation of 1,5-and 1,8-dinitroanthraquinone
ES430942A1 (en) Process for producing 1,5-dinitroanthraquinone and 1,8-dinitroanthraquinone
US2713596A (en) N-bromodichloroacetamide
GB1432087A (en) Anthraquinone dyestuffs
FR2367066A1 (en) PROCESS FOR THE PREPARATION OF 4-NITRO-IMIDAZOLES
JPS554357A (en) Preparation of high-grade p-nitrotoluenesulfonic acid
GB1480200A (en) Anthraquinone compounds
JPS5754163A (en) Preparation of anthraquinone intermediate
JPS5634659A (en) Preparation of high-purity 2-aminoanthraquinone
JPS5439063A (en) Preparation of nitroanthraquinone
JPS549257A (en) Preparation of highly pure 1,8-dihydroanthraquinone
KR840002341A (en) Mononitrochlorobenzene production method
GB1493037A (en) Manufacture of 3-amino-2,1-benzisothiazoles

Legal Events

Date Code Title Description
ST Notification of lapse