JPS552618A - Improved preparation of diphenylamine - Google Patents

Improved preparation of diphenylamine

Info

Publication number
JPS552618A
JPS552618A JP7427378A JP7427378A JPS552618A JP S552618 A JPS552618 A JP S552618A JP 7427378 A JP7427378 A JP 7427378A JP 7427378 A JP7427378 A JP 7427378A JP S552618 A JPS552618 A JP S552618A
Authority
JP
Japan
Prior art keywords
halogenoaniline
mole
high yield
phosphoric acid
purity
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
JP7427378A
Other languages
Japanese (ja)
Other versions
JPS5826905B2 (en
Inventor
Toshio Ohara
Yoshie Miyazawa
Katsuichi Motohashi
Masahiko Yamaguchi
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.)
Hodogaya Chemical Co Ltd
Original Assignee
Hodogaya Chemical 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 Hodogaya Chemical Co Ltd filed Critical Hodogaya Chemical Co Ltd
Priority to JP53074273A priority Critical patent/JPS5826905B2/en
Publication of JPS552618A publication Critical patent/JPS552618A/en
Publication of JPS5826905B2 publication Critical patent/JPS5826905B2/en
Expired 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

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

Abstract

PURPOSE: To obtain the title compound useful as an intermediate for dyes for pressure-, or heat-sensitive paper in high yield and purity, by reacting a hydroquinone derivative with an o-halogenoaniline in an inorganic phosphoric acid compound and a specific solvent under heating.
CONSTITUTION: One mole of a hydroquinone derivative of formula I: (R is H or lower alkyl group) is reacted with 0.9W2.0 moles of an o-halogenoaniline in the presence of 0.01W1.0 mole of an inorganic phosphoric acid compound, e.g. phosphorous, phosphoric or polyphosphoric acid, in 300W1,000ml of an organic inert solvent, e .g. o-dichlorobenzene or pseudocumene, having a boiling point of 100W 250°C at 100W200°C to give the objective compound of formula III, e.g. 4-hydroxy- 2'-chloro di phenylamine.
EFFECT: A high yield ≥80% and a high purity ≥98% with suppressed dechlorination reaction.
COPYRIGHT: (C)1980,JPO&Japio
JP53074273A 1978-06-21 1978-06-21 Improved manufacturing method for diphenylamine compounds Expired JPS5826905B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53074273A JPS5826905B2 (en) 1978-06-21 1978-06-21 Improved manufacturing method for diphenylamine compounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53074273A JPS5826905B2 (en) 1978-06-21 1978-06-21 Improved manufacturing method for diphenylamine compounds

Publications (2)

Publication Number Publication Date
JPS552618A true JPS552618A (en) 1980-01-10
JPS5826905B2 JPS5826905B2 (en) 1983-06-06

Family

ID=13542336

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53074273A Expired JPS5826905B2 (en) 1978-06-21 1978-06-21 Improved manufacturing method for diphenylamine compounds

Country Status (1)

Country Link
JP (1) JPS5826905B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58103342A (en) * 1981-12-15 1983-06-20 Toyo Soda Mfg Co Ltd Preparation of 2,4-dichloro-4'-hydroxydiphenylamine
JPS58118545A (en) * 1981-12-29 1983-07-14 Toyo Soda Mfg Co Ltd Preparation of 4-hydroxydiphenylamine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58103342A (en) * 1981-12-15 1983-06-20 Toyo Soda Mfg Co Ltd Preparation of 2,4-dichloro-4'-hydroxydiphenylamine
JPS58118545A (en) * 1981-12-29 1983-07-14 Toyo Soda Mfg Co Ltd Preparation of 4-hydroxydiphenylamine

Also Published As

Publication number Publication date
JPS5826905B2 (en) 1983-06-06

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