GB1165637A - Production of Nitrophenols. - Google Patents
Production of Nitrophenols.Info
- Publication number
- GB1165637A GB1165637A GB3312767A GB3312767A GB1165637A GB 1165637 A GB1165637 A GB 1165637A GB 3312767 A GB3312767 A GB 3312767A GB 3312767 A GB3312767 A GB 3312767A GB 1165637 A GB1165637 A GB 1165637A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nitro
- xylenol
- nitrophenol
- dichlorophenol
- dinitro
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
- C07C201/06—Preparation of nitro compounds
- C07C201/16—Separation; Purification; Stabilisation; Use of additives
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
- C07C201/06—Preparation of nitro compounds
- C07C201/08—Preparation of nitro compounds by substitution of hydrogen atoms by nitro groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1,165,637. Nitro-phenols. COALITE & CHEMICAL PRODUCTS Ltd. 19 July, 1968 [19 July, 1967], No. 33127/67. Heading C2C. A process for the production of nitro-phenols comprises nitrosating a phenol which is unsubstituted in at least one position and, without separating the nitroso compound, oxidizing the nitroso group or groups to a nitro group or groups. Purification of the crude nitrophenol is effected by converting it into an alkali metal salt thereof, separating the alkali metal salt from the mother liquor and acidifying the salt to regenerate the nitrophenol. The preparations of 4 - nitro - m - cresol, 2 - (and 3 - ) - chloro - 4 - nitrophenol, 4 - nitro - 2,3 - (and 2,5 - )xylenol, 4 - nitro - 2,5 - (and 2,6 -, 2,3 -, and 3,5 - )dichlorophenol, 2,4 - dinitro 3,6 - dichlorophenol and 4,6 - dinitro - 2,3 - xylenol are described. The phenylurethane derivative of 4-nitro-2,3- xylenol was prepared.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3312767A GB1165637A (en) | 1967-07-19 | 1967-07-19 | Production of Nitrophenols. |
DE19681768950 DE1768950B2 (en) | 1967-07-19 | 1968-07-17 | PROCESS FOR THE PREPARATION OF 4-NITROPHENOLS |
CH1073768A CH509965A (en) | 1967-07-19 | 1968-07-18 | (A) 4-Nitro-2,3-xylenol (B) prepn. of nitrophenols, by nitrosating a phenol which is unsubstd. in at least one position and then oxidising the intermediate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3312767A GB1165637A (en) | 1967-07-19 | 1967-07-19 | Production of Nitrophenols. |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1165637A true GB1165637A (en) | 1969-10-01 |
Family
ID=10348909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3312767A Expired GB1165637A (en) | 1967-07-19 | 1967-07-19 | Production of Nitrophenols. |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH509965A (en) |
DE (1) | DE1768950B2 (en) |
GB (1) | GB1165637A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3980717A (en) * | 1971-06-30 | 1976-09-14 | Hercules Incorporated | Manufacture of para-nitro-meta-cresol from meta/para-cresol mixtures |
FR2411823A1 (en) * | 1977-12-15 | 1979-07-13 | Cheminova As | Prepn. of nitrophenol cpds. useful as pesticide intermediates - by oxidn. of corresp. nitroso-phenol mixed with nitric acid and a solvent |
US4284797A (en) | 1978-06-05 | 1981-08-18 | Ciba-Geigy Corporation | Process for separating mixtures of 3- and 4-nitrophthalic acid |
FR2532645A1 (en) * | 1982-09-07 | 1984-03-09 | Rhone Poulenc Agrochimie | PROCESS FOR THE REMOVAL OF NITROSANTS FROM NITRATED AROMATIC COMPOUNDS |
EP0626366A1 (en) * | 1993-05-26 | 1994-11-30 | Rhone-Poulenc Chimie | Process for the preparation of nitrophenols |
FR2750986A1 (en) * | 1996-07-12 | 1998-01-16 | Rhone Poulenc Chimie | PROCESS FOR NITRATION OF A PHENOLIC COMPOUND SUBSTITUTED BY AN ELECTRO-ATTRACTOR GROUP |
CN100402487C (en) * | 2006-05-26 | 2008-07-16 | 常州市晔泰精细化工研究所 | Method for preparing 2-fluoro-4-nitrophenol |
-
1967
- 1967-07-19 GB GB3312767A patent/GB1165637A/en not_active Expired
-
1968
- 1968-07-17 DE DE19681768950 patent/DE1768950B2/en active Pending
- 1968-07-18 CH CH1073768A patent/CH509965A/en not_active IP Right Cessation
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3980717A (en) * | 1971-06-30 | 1976-09-14 | Hercules Incorporated | Manufacture of para-nitro-meta-cresol from meta/para-cresol mixtures |
FR2411823A1 (en) * | 1977-12-15 | 1979-07-13 | Cheminova As | Prepn. of nitrophenol cpds. useful as pesticide intermediates - by oxidn. of corresp. nitroso-phenol mixed with nitric acid and a solvent |
US4284797A (en) | 1978-06-05 | 1981-08-18 | Ciba-Geigy Corporation | Process for separating mixtures of 3- and 4-nitrophthalic acid |
FR2532645A1 (en) * | 1982-09-07 | 1984-03-09 | Rhone Poulenc Agrochimie | PROCESS FOR THE REMOVAL OF NITROSANTS FROM NITRATED AROMATIC COMPOUNDS |
EP0626366A1 (en) * | 1993-05-26 | 1994-11-30 | Rhone-Poulenc Chimie | Process for the preparation of nitrophenols |
FR2705672A1 (en) * | 1993-05-26 | 1994-12-02 | Rhone Poulenc Chimie | Process for preparing nitrophenols |
US5414148A (en) * | 1993-05-26 | 1995-05-09 | Rhone-Poulenc Chimie | Preparation of p-nitrophenolic compounds |
CN1067373C (en) * | 1993-05-26 | 2001-06-20 | 罗纳·布朗克化学公司 | Preparation of nitro phenol |
FR2750986A1 (en) * | 1996-07-12 | 1998-01-16 | Rhone Poulenc Chimie | PROCESS FOR NITRATION OF A PHENOLIC COMPOUND SUBSTITUTED BY AN ELECTRO-ATTRACTOR GROUP |
WO1998002408A1 (en) * | 1996-07-12 | 1998-01-22 | Rhodia Chimie | Nitrosation method of a phenolic composition substituted by an electro-attracting group and use thereof |
CN100402487C (en) * | 2006-05-26 | 2008-07-16 | 常州市晔泰精细化工研究所 | Method for preparing 2-fluoro-4-nitrophenol |
Also Published As
Publication number | Publication date |
---|---|
DE1768950A1 (en) | 1971-11-25 |
CH509965A (en) | 1971-07-15 |
DE1768950B2 (en) | 1973-03-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
414F | Notice of opposition given (sect. 14/1949) | ||
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |