JPS5764646A - Preparation of 2,6-dichloro-4-nitro-phenol - Google Patents
Preparation of 2,6-dichloro-4-nitro-phenolInfo
- Publication number
- JPS5764646A JPS5764646A JP13930380A JP13930380A JPS5764646A JP S5764646 A JPS5764646 A JP S5764646A JP 13930380 A JP13930380 A JP 13930380A JP 13930380 A JP13930380 A JP 13930380A JP S5764646 A JPS5764646 A JP S5764646A
- Authority
- JP
- Japan
- Prior art keywords
- water
- hydrogen peroxide
- hydrogen chloride
- nitrophenol
- conc
- 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
Links
Abstract
PURPOSE: To obtain the titled compound useful as an agricultural chemical, an agent for photograph, etc. safely in high yield and industrially advantageously, by treating p-nitrophenol with conc. hydrochloric acid and hydrogen peroxide.
CONSTITUTION: p-Nitrophenol is reacted with conc. hydrochloric acid having a concentration of ≥33% under cooling by a water bath containing ice at ≤10°C, and an aqueous solution of hydrogen peroxide having a concentration of ≥35wt% is added dropwise to the reaction mixture, The reaction mixture is kept 10W20°C for 1W2hr after the dropwise addition, the temperature is gradually raised upto 40W50°C and cooled to a room temperature Filtration and washing with water are carried out to give the titled compound.
EFFECT: Since a by-product produced by the use of an aqueous solution of hydrogen peroxide is water, the filtrate of the reaction product contain no impurity at all, it can be used permanently and repeatedly by introducing hydrogen chloride to saturate it, and no bad waste water is discharged. The operation of this method in a plant to carry out a reaction preparing hydrogen chloride as a by-product can use effectively waste hydrogen chloride.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13930380A JPS5764646A (en) | 1980-10-07 | 1980-10-07 | Preparation of 2,6-dichloro-4-nitro-phenol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13930380A JPS5764646A (en) | 1980-10-07 | 1980-10-07 | Preparation of 2,6-dichloro-4-nitro-phenol |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5764646A true JPS5764646A (en) | 1982-04-19 |
| JPS5748137B2 JPS5748137B2 (en) | 1982-10-14 |
Family
ID=15242140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13930380A Granted JPS5764646A (en) | 1980-10-07 | 1980-10-07 | Preparation of 2,6-dichloro-4-nitro-phenol |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5764646A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111440072A (en) * | 2020-04-08 | 2020-07-24 | 江苏扬农化工集团有限公司 | Synthetic method of chlorfluazuron key intermediate 2, 6-dichloro-4-nitrophenol |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59111561U (en) * | 1983-01-20 | 1984-07-27 | 池田物産株式会社 | Lumbar support device |
| JPS63172361U (en) * | 1987-04-30 | 1988-11-09 | ||
| JPH0211105A (en) * | 1988-06-30 | 1990-01-16 | Shiroki Corp | Sheet for vehicle |
-
1980
- 1980-10-07 JP JP13930380A patent/JPS5764646A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111440072A (en) * | 2020-04-08 | 2020-07-24 | 江苏扬农化工集团有限公司 | Synthetic method of chlorfluazuron key intermediate 2, 6-dichloro-4-nitrophenol |
| CN111440072B (en) * | 2020-04-08 | 2022-12-13 | 江苏扬农化工集团有限公司 | Synthetic method of chlorfluazuron key intermediate 2, 6-dichloro-4-nitrophenol |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5748137B2 (en) | 1982-10-14 |
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