JPS5659744A - Purification of crude ketazine solution containing ketoxime - Google Patents

Purification of crude ketazine solution containing ketoxime

Info

Publication number
JPS5659744A
JPS5659744A JP13557779A JP13557779A JPS5659744A JP S5659744 A JPS5659744 A JP S5659744A JP 13557779 A JP13557779 A JP 13557779A JP 13557779 A JP13557779 A JP 13557779A JP S5659744 A JPS5659744 A JP S5659744A
Authority
JP
Japan
Prior art keywords
ketazine
ketoxime
crude
alkali
aqueous solution
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
JP13557779A
Other languages
Japanese (ja)
Other versions
JPH0128014B2 (en
Inventor
Kengo Kawasaki
Tsukasa Maekawa
Hidetoshi Kume
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.)
Otsuka Chemical Co Ltd
Otsuka Kagaku Yakuhin KK
Original Assignee
Otsuka Chemical Co Ltd
Otsuka Kagaku Yakuhin 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 Otsuka Chemical Co Ltd, Otsuka Kagaku Yakuhin KK filed Critical Otsuka Chemical Co Ltd
Priority to JP13557779A priority Critical patent/JPS5659744A/en
Publication of JPS5659744A publication Critical patent/JPS5659744A/en
Publication of JPH0128014B2 publication Critical patent/JPH0128014B2/ja
Granted legal-status Critical Current

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

Abstract

PURPOSE: To prepare highly pure ketazine useful as an intermediate of hydrazine, easily and economically, from a crude ketazine solution containing ketoxime, by adding an alkali or an aqueous solution of an alkali to the ketazine solution, and extracting with an organic solvent.
CONSTITUTION: An aqueous solution of crude ketazine of formula II (R1 and R2 are 1W4C alkyl, etc.) containing a ketoxime of formula I is added with an alkali directly or in the form of an aqueous solution, and extracted with an organic solvent to obtain purified ketazine free from ketoxime.
EFFECT: The affinity of ketoxime to water becomes completely opposite to that of ketazine by the presence of alkali, which enables the selective fractionation extraction of the compounds.
COPYRIGHT: (C)1981,JPO&Japio
JP13557779A 1979-10-19 1979-10-19 Purification of crude ketazine solution containing ketoxime Granted JPS5659744A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13557779A JPS5659744A (en) 1979-10-19 1979-10-19 Purification of crude ketazine solution containing ketoxime

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13557779A JPS5659744A (en) 1979-10-19 1979-10-19 Purification of crude ketazine solution containing ketoxime

Publications (2)

Publication Number Publication Date
JPS5659744A true JPS5659744A (en) 1981-05-23
JPH0128014B2 JPH0128014B2 (en) 1989-05-31

Family

ID=15155059

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13557779A Granted JPS5659744A (en) 1979-10-19 1979-10-19 Purification of crude ketazine solution containing ketoxime

Country Status (1)

Country Link
JP (1) JPS5659744A (en)

Also Published As

Publication number Publication date
JPH0128014B2 (en) 1989-05-31

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