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JPS57169447A - Preparation of 2,4-dichloro- or 2,6-dichloroaniline - Google Patents

Preparation of 2,4-dichloro- or 2,6-dichloroaniline

Info

Publication number
JPS57169447A
JPS57169447A JP56054088A JP5408881A JPS57169447A JP S57169447 A JPS57169447 A JP S57169447A JP 56054088 A JP56054088 A JP 56054088A JP 5408881 A JP5408881 A JP 5408881A JP S57169447 A JPS57169447 A JP S57169447A
Authority
JP
Japan
Prior art keywords
dichloroaniline
dichloro
acid
bromonitrobenzene
dichlorobenzene
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
JP56054088A
Other languages
Japanese (ja)
Other versions
JPS6356216B2 (en
Inventor
Toshihiko Shimado
Takeo Yamada
Shinichi Kimura
Fumihiko Mizutani
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.)
Ishihara Sangyo Kaisha Ltd
Original Assignee
Ishihara Sangyo Kaisha 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 Ishihara Sangyo Kaisha Ltd filed Critical Ishihara Sangyo Kaisha Ltd
Priority to JP56054088A priority Critical patent/JPS57169447A/en
Publication of JPS57169447A publication Critical patent/JPS57169447A/en
Publication of JPS6356216B2 publication Critical patent/JPS6356216B2/ja
Granted 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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE: To obtain the titled compound useful as a raw material for agricultural chemicals, medicines, dyes, etc. easily, by reacting a 1-bromo-3,5-dichlorobenzene with a mixed acid at a specific temperature, and reacting the resultant reaction product with H2 in the presence of a catalyst at a specific temperature under pressure.
CONSTITUTION: 1-Bromo-3,5-dichlorobenzene is reacted with a mixed acid, e.g. nitric acid with sulfuric acid, at 0W150°C to give 2,4-dichloro-6-bromonitrobenzene or 2,6-dichloro-4-bromonitrobenzene. In case a solvent is used, acetic acid, sulfuric acid or carbon tetrachloride is used. The resultant bromodichloronitrobenzene is then reacted with H2 in the presence of a catalyst, e.g. Pd, Pt or Ni, at 50W200°C and a pressure of 2W100kg/cm2.G to afford 2,4-dichloroaniline or 2,6-dichloroaniline.
EFFECT: The aimed substance is obtained in high yield well in one stage with the inhibited formation of by-products.
COPYRIGHT: (C)1982,JPO&Japio
JP56054088A 1981-04-10 1981-04-10 Preparation of 2,4-dichloro- or 2,6-dichloroaniline Granted JPS57169447A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56054088A JPS57169447A (en) 1981-04-10 1981-04-10 Preparation of 2,4-dichloro- or 2,6-dichloroaniline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56054088A JPS57169447A (en) 1981-04-10 1981-04-10 Preparation of 2,4-dichloro- or 2,6-dichloroaniline

Publications (2)

Publication Number Publication Date
JPS57169447A true JPS57169447A (en) 1982-10-19
JPS6356216B2 JPS6356216B2 (en) 1988-11-07

Family

ID=12960859

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56054088A Granted JPS57169447A (en) 1981-04-10 1981-04-10 Preparation of 2,4-dichloro- or 2,6-dichloroaniline

Country Status (1)

Country Link
JP (1) JPS57169447A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60130553A (en) * 1983-12-19 1985-07-12 Central Glass Co Ltd Preparation of 4-chloro-2-trifluoromethylaniline
JP2011524402A (en) * 2008-06-16 2011-09-01 ベーリンガー インゲルハイム インターナショナル ゲゼルシャフト ミット ベシュレンクテル ハフツング Method for producing an intermediate for the synthesis of dabigatran

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60130553A (en) * 1983-12-19 1985-07-12 Central Glass Co Ltd Preparation of 4-chloro-2-trifluoromethylaniline
JP2011524402A (en) * 2008-06-16 2011-09-01 ベーリンガー インゲルハイム インターナショナル ゲゼルシャフト ミット ベシュレンクテル ハフツング Method for producing an intermediate for the synthesis of dabigatran

Also Published As

Publication number Publication date
JPS6356216B2 (en) 1988-11-07

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