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JPS5683430A - Preparation of pyrogallol - Google Patents

Preparation of pyrogallol

Info

Publication number
JPS5683430A
JPS5683430A JP16109779A JP16109779A JPS5683430A JP S5683430 A JPS5683430 A JP S5683430A JP 16109779 A JP16109779 A JP 16109779A JP 16109779 A JP16109779 A JP 16109779A JP S5683430 A JPS5683430 A JP S5683430A
Authority
JP
Japan
Prior art keywords
cyclohexanetriol
pref
pyrogallol
catalyst
group metal
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
JP16109779A
Other languages
Japanese (ja)
Other versions
JPS6261008B2 (en
Inventor
Takao Maki
Kenji Murayama
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.)
Mitsubishi Kasei Corp
Original Assignee
Mitsubishi Kasei Corp
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 Mitsubishi Kasei Corp filed Critical Mitsubishi Kasei Corp
Priority to JP16109779A priority Critical patent/JPS5683430A/en
Priority to US06/213,900 priority patent/US4319054A/en
Priority to EP80107874A priority patent/EP0031530B1/en
Priority to DE8080107874T priority patent/DE3067213D1/en
Publication of JPS5683430A publication Critical patent/JPS5683430A/en
Publication of JPS6261008B2 publication Critical patent/JPS6261008B2/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

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

Abstract

PURPOSE: To prepare pyrogallol useful as an intermediate for the organic syntheses of bioactive substances, etc., in high selectivity, by the dehydrogenation of 1,2,3- cyclohexanetriol in an inert gas stream in the presence of a Pt-group metal catalyst.
CONSTITUTION: Pyrogallol is prepared by the dehydrogenation of 1,2,3-cyclohexanetriol in the presence of a catalyst comprising a Pt-group metal such as Ir, Rh, Pd, etc. or a Pt-group metal added with an alkali metal compound such as K2CO3, and pref. supported on a carrier such as activated charcoal, in an inert gas stream which does not participate in the reactions, e.g. N2 and CO2, at 150W350°C under atmospheric or reduced pressure. The reaction is pref. carried out in the vapor phase to prevent the dissolution of the alkali metal compound. 1,2,3-Cyclohexanetriol is pref. used as an aqueous solution because the presence of water in the reaction system elongates the life of the catalyst.
COPYRIGHT: (C)1981,JPO&Japio
JP16109779A 1979-12-12 1979-12-12 Preparation of pyrogallol Granted JPS5683430A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP16109779A JPS5683430A (en) 1979-12-12 1979-12-12 Preparation of pyrogallol
US06/213,900 US4319054A (en) 1979-12-12 1980-12-08 Process for producing pyrogallol
EP80107874A EP0031530B1 (en) 1979-12-12 1980-12-12 Process for producing pyrogallol
DE8080107874T DE3067213D1 (en) 1979-12-12 1980-12-12 Process for producing pyrogallol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16109779A JPS5683430A (en) 1979-12-12 1979-12-12 Preparation of pyrogallol

Publications (2)

Publication Number Publication Date
JPS5683430A true JPS5683430A (en) 1981-07-08
JPS6261008B2 JPS6261008B2 (en) 1987-12-18

Family

ID=15728541

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16109779A Granted JPS5683430A (en) 1979-12-12 1979-12-12 Preparation of pyrogallol

Country Status (1)

Country Link
JP (1) JPS5683430A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6242670A (en) * 1985-08-20 1987-02-24 Sumitomo Electric Ind Ltd Image sensor output binarization system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6242670A (en) * 1985-08-20 1987-02-24 Sumitomo Electric Ind Ltd Image sensor output binarization system

Also Published As

Publication number Publication date
JPS6261008B2 (en) 1987-12-18

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