JPS55133333A - Selective separation of 2,6-dinitrotoluene from dinitrotoluene mixture - Google Patents

Selective separation of 2,6-dinitrotoluene from dinitrotoluene mixture

Info

Publication number
JPS55133333A
JPS55133333A JP4123779A JP4123779A JPS55133333A JP S55133333 A JPS55133333 A JP S55133333A JP 4123779 A JP4123779 A JP 4123779A JP 4123779 A JP4123779 A JP 4123779A JP S55133333 A JPS55133333 A JP S55133333A
Authority
JP
Japan
Prior art keywords
species
dinitrotoluene
mixture
title compound
under pressure
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
JP4123779A
Other languages
Japanese (ja)
Inventor
Shinichi Horikawa
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP4123779A priority Critical patent/JPS55133333A/en
Publication of JPS55133333A publication Critical patent/JPS55133333A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Landscapes

  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE: To obtain the title compound which is useful as an intermediate for syntheses of perfumes, medicines, etc. safely in high purity, by the selective reduction of 2,4-species through the hydrogenation of dinitrotoluene mixture in the presence of a catalyst under pressure.
CONSTITUTION: Mixture of 2,4- and 2,6-dinitrotoluenes is hydrogenated in an autoclave under pressure, preferably at 40W50atm, in the presence of a catalyst such as palladium carbon, Raney mickel, Raney cobalt or platinum black, preferably at 40W50°C. Thereby, nitro group at 4 position of the 2,4-species recieves reductive action most easily, and the 2,4-species is selectively converted into an amine by the addition of hydrogen in an amount corresponding to 4 position of the 2,4-species. The title compound is obtained by removing the amine part from a reaction mixture through acid treatment and recrystallizing the residual non-amine part. Methyl alcohol, benzene, dimethylformamide, etc. is preferably used as a solvent in said reaction.
COPYRIGHT: (C)1980,JPO&Japio
JP4123779A 1979-04-04 1979-04-04 Selective separation of 2,6-dinitrotoluene from dinitrotoluene mixture Pending JPS55133333A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4123779A JPS55133333A (en) 1979-04-04 1979-04-04 Selective separation of 2,6-dinitrotoluene from dinitrotoluene mixture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4123779A JPS55133333A (en) 1979-04-04 1979-04-04 Selective separation of 2,6-dinitrotoluene from dinitrotoluene mixture

Publications (1)

Publication Number Publication Date
JPS55133333A true JPS55133333A (en) 1980-10-17

Family

ID=12602807

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4123779A Pending JPS55133333A (en) 1979-04-04 1979-04-04 Selective separation of 2,6-dinitrotoluene from dinitrotoluene mixture

Country Status (1)

Country Link
JP (1) JPS55133333A (en)

Similar Documents

Publication Publication Date Title
EP0978505A3 (en) Process for the hydrogenation of dinitrotoluene to toluenediamine using a monolith catalyst
JPS55151521A (en) Preparation of alcohol
EP0923533B1 (en) Hydrogenation of aromatic nitrocompounds to aromatic amines
DE112006001236T5 (en) Process for the preparation of 4-aminodiphenylamine
CN100404497C (en) Nitrile reducing process to prepare amine
DK0605363T3 (en) Process for Preparation of 2-alkyl-6-methyl-N- (1-methoxy-2-propyl) -aniline Same method for preparing their chloroacetanilides
KR930017854A (en) Purification method of cyclohexanone
JPS5827262B2 (en) Seizouhouhou
JPS559020A (en) Preparation of tertiary amine having long-chain alkyl group
Iyer et al. Ni [P (OPh) 3] 4 catalyzed transfer hydrogenation using HCOONH4
JPS55133333A (en) Selective separation of 2,6-dinitrotoluene from dinitrotoluene mixture
JPS55133334A (en) Separation of 2,6-dinitrotoluene from dinitrotoluene mixture
JPH02279657A (en) Production of aniline
NZ212157A (en) The preparation of #a#-methyl-1-adamantanemethylamine
JPS5522630A (en) Preparation of alpha-phenylethylamine
Lunn et al. Reductive destruction of N-nitrosodimethylamine as an approach to hazard control in the carcinogenesis laboratory
ES478478A1 (en) Process for the preparation of p-amino-diphenylamine
JPS57123148A (en) Production of secondary amine by reductive alkylation
Rampulla et al. Selective Reduction of Nitroarylhydrazones by Catalytic Transfer Hydrogenation with Cyclohexene
JPS57117526A (en) Preparation of polycondensate from omega-oxypentadecanoic acid
JPS5551042A (en) Preparation of amines
JPS545903A (en) Preparation of 4-aminomethyl-1,8-diaminooctane
JPS57167946A (en) Preparation of high purity aniline
JPS5564584A (en) Preparation of 3,7-diaminodibenzo-thiophene-5,5-dioxide
JPS53119832A (en) Preparation of p-phenylenediamine