GB1512775A - Process for the preparation of aminonitrophenols - Google Patents

Process for the preparation of aminonitrophenols

Info

Publication number
GB1512775A
GB1512775A GB1410777A GB1410777A GB1512775A GB 1512775 A GB1512775 A GB 1512775A GB 1410777 A GB1410777 A GB 1410777A GB 1410777 A GB1410777 A GB 1410777A GB 1512775 A GB1512775 A GB 1512775A
Authority
GB
United Kingdom
Prior art keywords
aminonitrophenols
polynitrophenol
preparation
mol
per mole
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.)
Expired
Application number
GB1410777A
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 GB1512775A publication Critical patent/GB1512775A/en
Expired legal-status Critical Current

Links

Abstract

Aminonitrophenols are obtained by partial reduction of polynitrophenols. The reduction is carried out in aqueous solution with from 1 to 8 mol of ammonia per mole of polynitrophenol at temperatures of up to 100 DEG C in the presence of 2.5 to 6 mol of sulphide ions per mole of polynitrophenol. The compounds obtained can be used for synthesising dyes.
GB1410777A 1976-04-06 1977-04-04 Process for the preparation of aminonitrophenols Expired GB1512775A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762614825 DE2614825C3 (en) 1976-04-06 1976-04-06 Process for the preparation of aminonitrophenols

Publications (1)

Publication Number Publication Date
GB1512775A true GB1512775A (en) 1978-06-01

Family

ID=5974575

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1410777A Expired GB1512775A (en) 1976-04-06 1977-04-04 Process for the preparation of aminonitrophenols

Country Status (9)

Country Link
JP (1) JPS52122327A (en)
BE (1) BE853291A (en)
BR (1) BR7702163A (en)
CH (1) CH628020A5 (en)
DE (1) DE2614825C3 (en)
ES (1) ES457558A1 (en)
FR (1) FR2347332A1 (en)
GB (1) GB1512775A (en)
IT (1) IT1073238B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113372228A (en) * 2021-06-08 2021-09-10 浙江鼎龙科技股份有限公司 Preparation method of 2-amino-6-chloro-4-nitrophenol

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3002254A1 (en) * 1980-01-23 1981-07-30 Cassella Ag, 6000 Frankfurt METHOD FOR PRODUCING 2-AMINO-4-NITROPHENOL
DE4018335A1 (en) * 1990-06-08 1991-12-12 Wella Ag Compsn. for dyeing hair - contains 2-amino-4-halo-6-nitrophenol as dye and 2-amino-4-fluoro-6-nitrophenol as new cpd.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2464194A (en) * 1945-05-05 1949-03-08 Gen Aniline & Film Corp Reduction of nitrophenols
GB1001092A (en) * 1962-09-27 1965-08-11 Monsanto Chem Australia Ltd Production of aminoquinolines
FR1534593A (en) * 1966-09-02 1968-07-26 Merck & Co Inc Reduction of a nitrophenyl compound to an aminophenyl compound

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113372228A (en) * 2021-06-08 2021-09-10 浙江鼎龙科技股份有限公司 Preparation method of 2-amino-6-chloro-4-nitrophenol

Also Published As

Publication number Publication date
DE2614825B2 (en) 1980-05-08
JPS52122327A (en) 1977-10-14
FR2347332A1 (en) 1977-11-04
DE2614825A1 (en) 1977-10-13
DE2614825C3 (en) 1981-01-29
BE853291A (en) 1977-10-06
IT1073238B (en) 1985-04-13
FR2347332B1 (en) 1983-09-09
CH628020A5 (en) 1982-02-15
ES457558A1 (en) 1978-03-16
BR7702163A (en) 1978-10-31

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee