JPS5579357A - Purification of 2-cyano-4-nitroaniline - Google Patents

Purification of 2-cyano-4-nitroaniline

Info

Publication number
JPS5579357A
JPS5579357A JP15315978A JP15315978A JPS5579357A JP S5579357 A JPS5579357 A JP S5579357A JP 15315978 A JP15315978 A JP 15315978A JP 15315978 A JP15315978 A JP 15315978A JP S5579357 A JPS5579357 A JP S5579357A
Authority
JP
Japan
Prior art keywords
cna
nitroaniline
cyano
purification
butanol
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
JP15315978A
Other languages
Japanese (ja)
Other versions
JPS6039268B2 (en
Inventor
Nobuyuki Futamura
Heiichi Kawashima
Katsuhiko Kurabayashi
Hitoshi Saito
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.)
Nippon Kayaku Co Ltd
Original Assignee
Nippon Kayaku 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 Nippon Kayaku Co Ltd filed Critical Nippon Kayaku Co Ltd
Priority to JP15315978A priority Critical patent/JPS6039268B2/en
Publication of JPS5579357A publication Critical patent/JPS5579357A/en
Publication of JPS6039268B2 publication Critical patent/JPS6039268B2/en
Expired legal-status Critical Current

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

Abstract

PURPOSE: To obtain CNA(2-cyano-4-nitroaniline) useful as an intermediate for dyes, inexpensively and in high yield, by purification of CNA comprising impurities through heat treatment with n-butanol, aqueous pyridine, etc.
CONSTITUTION: 5g of crude CNA comprising 2-cyano-6-nitroaniline and the like, for example, of 98.5% purity, having the mp(melting point) of 203W208°C, and 50g of n-butanol, for examle, in an amount of 1W20 times that of the crude CNA, are heat-treated in a 100ml flask with reflux and stirring for 30minW3hr, e.g. 1hr, at 70°C or above, preferably reflux temperature and then cooled to 35°C, to obtain the crystals of the purified CNA. Too short heating and stirring time gives low purification rate; too long time, low recovery.
COPYRIGHT: (C)1980,JPO&Japio
JP15315978A 1978-12-13 1978-12-13 Method for purifying 2-cyano-4-nitroaniline Expired JPS6039268B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15315978A JPS6039268B2 (en) 1978-12-13 1978-12-13 Method for purifying 2-cyano-4-nitroaniline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15315978A JPS6039268B2 (en) 1978-12-13 1978-12-13 Method for purifying 2-cyano-4-nitroaniline

Publications (2)

Publication Number Publication Date
JPS5579357A true JPS5579357A (en) 1980-06-14
JPS6039268B2 JPS6039268B2 (en) 1985-09-05

Family

ID=15556316

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15315978A Expired JPS6039268B2 (en) 1978-12-13 1978-12-13 Method for purifying 2-cyano-4-nitroaniline

Country Status (1)

Country Link
JP (1) JPS6039268B2 (en)

Also Published As

Publication number Publication date
JPS6039268B2 (en) 1985-09-05

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