JPS5764646A - Preparation of 2,6-dichloro-4-nitro-phenol - Google Patents

Preparation of 2,6-dichloro-4-nitro-phenol

Info

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
Application number
JP13930380A
Other languages
Japanese (ja)
Other versions
JPS5748137B2 (en
Inventor
Shoji Kobayashi
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.)
SANWA KAGAKU KOGYO KK
Original Assignee
SANWA KAGAKU KOGYO KK
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 SANWA KAGAKU KOGYO KK filed Critical SANWA KAGAKU KOGYO KK
Priority to JP13930380A priority Critical patent/JPS5764646A/en
Publication of JPS5764646A publication Critical patent/JPS5764646A/en
Publication of JPS5748137B2 publication Critical patent/JPS5748137B2/ja
Granted legal-status Critical Current

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

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
JP13930380A 1980-10-07 1980-10-07 Preparation of 2,6-dichloro-4-nitro-phenol Granted JPS5764646A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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