JPS5653631A - Preparation of diphenol - Google Patents

Preparation of diphenol

Info

Publication number
JPS5653631A
JPS5653631A JP13061879A JP13061879A JPS5653631A JP S5653631 A JPS5653631 A JP S5653631A JP 13061879 A JP13061879 A JP 13061879A JP 13061879 A JP13061879 A JP 13061879A JP S5653631 A JPS5653631 A JP S5653631A
Authority
JP
Japan
Prior art keywords
raw material
catalyst
formula
expressed
base
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
JP13061879A
Other languages
Japanese (ja)
Inventor
Teruo Matsuda
Tetsuo Murata
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.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo 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 Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to JP13061879A priority Critical patent/JPS5653631A/en
Publication of JPS5653631A publication Critical patent/JPS5653631A/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

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

Abstract

PURPOSE: To obtain a wide range of diphenols useful as a raw material for heat- resistant resins or polyesters, readily, by the dehalogenation and dimerization of a halogenated phenol, in the presence of a base and a Pd catalyst, in methanol solvent.
CONSTITUTION: A halogenated phenol expressed by formula I (n is an integer 0W2; X is Cl, Br or I; R is alkyl, cycloalkyl, phenyl, alkoxyl or hydroxyl), e.g. p- chlorophenol, is dehalogenated and dimerized in methanol solvent in an amount of 2W40 times that of the raw material by weight, in the presence of a base [a hydroxide, oxide, carbonate, bicarbonate or alkoxide of an alkali (earth) metal, e.g. NaOH or KOH] in a molar amount of 0.8W8 times that of the raw material, and a Pd catalyst, e.g. Pd/CaCO3, preferably at 70W200°C, to give diphenol expressed by formula II.
USE: A stabilizer, an intermediate for dyestuffs, or a raw material for polycarbonates.
COPYRIGHT: (C)1981,JPO&Japio
JP13061879A 1979-10-08 1979-10-08 Preparation of diphenol Pending JPS5653631A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13061879A JPS5653631A (en) 1979-10-08 1979-10-08 Preparation of diphenol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13061879A JPS5653631A (en) 1979-10-08 1979-10-08 Preparation of diphenol

Publications (1)

Publication Number Publication Date
JPS5653631A true JPS5653631A (en) 1981-05-13

Family

ID=15038525

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13061879A Pending JPS5653631A (en) 1979-10-08 1979-10-08 Preparation of diphenol

Country Status (1)

Country Link
JP (1) JPS5653631A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61243038A (en) * 1985-04-19 1986-10-29 Mitsui Toatsu Chem Inc Production of 3-phenoxybenzyl 2-(4-alkoxyphenyl)-2-methylpropyl ether
JPS63108023A (en) * 1986-06-20 1988-05-12 Idemitsu Kosan Co Ltd Novel polycarbonate polymer and its production
US4804788A (en) * 1986-11-07 1989-02-14 Kureha Kagaku Kogyo K.K. Preparation process of 4,4-dihydroxybiphenyl
JPS6443559A (en) * 1987-08-12 1989-02-15 Idemitsu Kosan Co Polycarbonate resin composition
US4873374A (en) * 1987-04-14 1989-10-10 Mitsui Toatsu Chemicals, Incorporated Preparation process of 4,4'-biphenol, precursor of same and preparation process of precursor
JPH02255634A (en) * 1989-03-29 1990-10-16 Sanko Kaihatsu Kagaku Kenkyusho:Kk Production of 4,4'''-dihydroxyquaterphenyl or its derivative
US5235024A (en) * 1988-05-26 1993-08-10 Sekisui Kagaku Kogyo Kabushiki Kaisha Polyester and an article made of the same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61243038A (en) * 1985-04-19 1986-10-29 Mitsui Toatsu Chem Inc Production of 3-phenoxybenzyl 2-(4-alkoxyphenyl)-2-methylpropyl ether
JPS63108023A (en) * 1986-06-20 1988-05-12 Idemitsu Kosan Co Ltd Novel polycarbonate polymer and its production
US4804788A (en) * 1986-11-07 1989-02-14 Kureha Kagaku Kogyo K.K. Preparation process of 4,4-dihydroxybiphenyl
USRE33779E (en) * 1986-11-07 1991-12-24 Kureha Kagaku Kogyo K.K. Preparation process of 4,4-dihydroxybiphenyl
US4873374A (en) * 1987-04-14 1989-10-10 Mitsui Toatsu Chemicals, Incorporated Preparation process of 4,4'-biphenol, precursor of same and preparation process of precursor
JPS6443559A (en) * 1987-08-12 1989-02-15 Idemitsu Kosan Co Polycarbonate resin composition
US5235024A (en) * 1988-05-26 1993-08-10 Sekisui Kagaku Kogyo Kabushiki Kaisha Polyester and an article made of the same
JPH02255634A (en) * 1989-03-29 1990-10-16 Sanko Kaihatsu Kagaku Kenkyusho:Kk Production of 4,4'''-dihydroxyquaterphenyl or its derivative

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