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

Links

Landscapes

  • 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

Similar Documents

Publication Publication Date Title
KR880002847A (en) Method for preparing a thiazole derivative having a morphologically uniform form
KR920009837A (en) Neotrehalose manufacturing method and use thereof
JPS5579357A (en) Purification of 2-cyano-4-nitroaniline
FR2606036B1 (en) PROCESS FOR OBTAINING, BY COOLING MOLTEN ALLOYS, CRYSTALS OF INTERMETALLIC COMPOUNDS, IN PARTICULAR, ISOLATED SINGLE CRYSTALS
JPS549174A (en) Method of producing seingle crystal
JPS5353613A (en) Preparation of methacrylic acid
JPS5339324A (en) Quinacridone pigment
JPS539209A (en) High frequency heating coil of floating zone purifying apparatus
JPS5534115A (en) Crystallization method
JPS53127891A (en) Crystallization of co-enzyme q
JPS51149287A (en) Process for preparing 5-fluorouracil
JPS53113080A (en) Purification of urokinase
JPS5331593A (en) Purifying method for chlorine gas
JPS5373507A (en) Crystallization of pentaerythritol
JPS5748949A (en) Preparation of ethylenediaminetetraacetic acid alkali metal salt
JPS5212146A (en) Process for preparation of p- acetylaminobenzene-sufonylchloride
JPS52140497A (en) Recovery of arsenic from arsenic-contg. solution of sulfuric acid
JPS5252816A (en) Purifying method of sodium
JPS56150046A (en) Production of 4-dimethylaminostilbene
JPS57167941A (en) Purification of clinofibrate
JPS5371052A (en) Purification of 19-norethisterone
JPS5329996A (en) Separation of amino acid from fermentation liquid
JPS5320493A (en) Separation of ribonucleic acid
UST964002I4 (en) Method to purify magnesium chloride to produce a flux for molten magnesium
JPS5679659A (en) Preparation of purified tetracyanoquinodimethan