JPS57126466A - Production of diphenylurea - Google Patents

Production of diphenylurea

Info

Publication number
JPS57126466A
JPS57126466A JP1187081A JP1187081A JPS57126466A JP S57126466 A JPS57126466 A JP S57126466A JP 1187081 A JP1187081 A JP 1187081A JP 1187081 A JP1187081 A JP 1187081A JP S57126466 A JPS57126466 A JP S57126466A
Authority
JP
Japan
Prior art keywords
reaction
sulfite
sulfochloride
salt
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.)
Pending
Application number
JP1187081A
Other languages
Japanese (ja)
Inventor
Norio Kodera
Shinzaburo Masaki
Tatsuo Kanechika
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.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
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 Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to JP1187081A priority Critical patent/JPS57126466A/en
Publication of JPS57126466A publication Critical patent/JPS57126466A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: The reaction of a sulfochloride with a sulfite salt gives a symmetric diphenyliureadisulfinic acid or its salt used as an intermediate of dyes with industrial advantages.
CONSTITUTION: The reaction between a sulfochloride of formulaIand a sulfite salt such as lithium sulfite is conducted in an air or nitrogen atmospher at 30W 50°C to give the objective compound of formula II. The amount of the sulfite used in this reaction is 3W10mol per mole of the sulfochloride. The reaction may be effected in the presence of a solvent, however, preferably it is carried out in an aqueous medium, while the reaction system is always kept in pH to 7W11 using an appropriate alkali. The product is isolated directly from the reaction mixture or after acidification as the free acid.
COPYRIGHT: (C)1982,JPO&Japio
JP1187081A 1981-01-27 1981-01-27 Production of diphenylurea Pending JPS57126466A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1187081A JPS57126466A (en) 1981-01-27 1981-01-27 Production of diphenylurea

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1187081A JPS57126466A (en) 1981-01-27 1981-01-27 Production of diphenylurea

Publications (1)

Publication Number Publication Date
JPS57126466A true JPS57126466A (en) 1982-08-06

Family

ID=11789751

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1187081A Pending JPS57126466A (en) 1981-01-27 1981-01-27 Production of diphenylurea

Country Status (1)

Country Link
JP (1) JPS57126466A (en)

Similar Documents

Publication Publication Date Title
JPS5419931A (en) Separation of threo, erythro-3-(3,4-dibenzyloxyphenyl)serines
JPS5531059A (en) Preparation of alkali metal p-styrenesulfonate
JPS57126466A (en) Production of diphenylurea
JPS57192392A (en) Production of 3-alkoxymethylcephalosporin
ES2094275T3 (en) PROCEDURE FOR PREPARING 2-CHLOROANILINS AND 2,6-DICHLOROANILINS.
JPS5517339A (en) Preparation of thiourea dioxide
GB1448003A (en) 1,2,4-triazolin-5-ones and their use as herbicidal compounds
JPS554349A (en) Preparation of creatine
JPS52152932A (en) Fluorescent brighteners for resin treatment
SU1047903A1 (en) 2,2,7,7-tetramethyl-5-oxohexahydro-1,4-diazepin-1-oxyl
EP0111569A4 (en) Hydroxyalkanesulfonic acids and their derivatives, and process for their preparation.
JPS5735556A (en) Preparation of guanidinomethylcyclohexanecarboxylic acid ester
JPS5495541A (en) Production of cyanophenol
JPS5653685A (en) Production of cephalosporin derivative
JPS567752A (en) Preparation of 2- sulfophenylhydrazino -butane diacid derivative
JPS5559160A (en) Production of hydroxymercaptan
JPS5564565A (en) Preparation of styrenesulfonic acid alkali metal salt
JPS5758662A (en) Production of o-nitrophenyl-beta-hydroxyethylsulfide
JPS57149257A (en) 4-benzyloxyphenylacetamide
JPS57212172A (en) Preparation of cyanuric halide derivative
JPS5777644A (en) Liquid crystal ester compound
EP0081320A3 (en) Preparation of acetic acid derivatives
JPS57203056A (en) Synthesis of sulfonyl chloride
JPS56128770A (en) N-amino-5-fluorouracil and its preparation
JPS57154189A (en) Preparation of cephalosporin derivative