GB1442290A – Process for the hydroxylation of phenols and phenol ethers in the nucleus
– Google Patents
GB1442290A – Process for the hydroxylation of phenols and phenol ethers in the nucleus
– Google Patents
Process for the hydroxylation of phenols and phenol ethers in the nucleus
Info
Publication number
GB1442290A
GB1442290A
GB934575A
GB934575A
GB1442290A
GB 1442290 A
GB1442290 A
GB 1442290A
GB 934575 A
GB934575 A
GB 934575A
GB 934575 A
GB934575 A
GB 934575A
GB 1442290 A
GB1442290 A
GB 1442290A
Authority
GB
United Kingdom
Prior art keywords
phenol
hydroxylation
nucleus
phenols
carried out
Prior art date
1974-03-06
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.)
Expired
Application number
GB934575A
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.)
Bayer AG
Original Assignee
Bayer AG
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.)
1974-03-06
Filing date
1975-03-06
Publication date
1976-07-14
1975-03-06
Application filed by Bayer AG
filed
Critical
Bayer AG
1976-07-14
Publication of GB1442290A
publication
Critical
patent/GB1442290A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
C07C37/60—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by oxidation reactions introducing directly hydroxy groups on a =CH-group belonging to a six-membered aromatic ring with the aid of other oxidants than molecular oxygen or their mixtures with molecular oxygen
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
C07C41/01—Preparation of ethers
C07C41/18—Preparation of ethers by reactions not forming ether-oxygen bonds
C07C41/26—Preparation of ethers by reactions not forming ether-oxygen bonds by introduction of hydroxy or O-metal groups
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
Y02P20/582—Recycling of unreacted starting or intermediate materials
Abstract
1442290 Hydroxylation of phenols and phenol ethers BAYER AG 6 March 1975 [6 March 1974] 9345/75 Heading C2C The invention comprises a process for the hydroxylation in the nucleus of a phenol (excluding unsubstituted phenol itself) or a phenol ether wherein a phenol (excluding unsubstituted phenol itself) or a phenol ether is reacted initially with substantially anhydrous hydrogen peroxide, wherein the reaction is carried out in the presence of an acid having a pKa value of #4À76 at 25‹ C. and wherein the resulting phenol or phenol ether hydroxylated in the nucleus is recovered. The acid is preferably one which is inert under the reaction conditions. The hydrogen peroxide may be dissolved in an anhydrous solvent. The reaction is preferably carried out at from 20‹ to 150‹ C. and may be carried out in the presence of a stabilizer.
GB934575A
1974-03-06
1975-03-06
Process for the hydroxylation of phenols and phenol ethers in the nucleus
Expired
GB1442290A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
DE2410758A
DE2410758C3
(en)
1974-03-06
1974-03-06
Process for the production of polyhydric substituted phenols or monoethers of polyhydric phenols by nuclear hydroxylation of phenols or phenol ethers
Publications (1)
Publication Number
Publication Date
GB1442290A
true
GB1442290A
(en)
1976-07-14
Family
ID=5909276
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB934575A
Expired
GB1442290A
(en)
1974-03-06
1975-03-06
Process for the hydroxylation of phenols and phenol ethers in the nucleus
Country Status (8)
Country
Link
US
(1)
US4045496A
(en)
JP
(1)
JPS5753330B2
(en)
BE
(1)
BE826244A
(en)
DE
(1)
DE2410758C3
(en)
FR
(1)
FR2263217B1
(en)
GB
(1)
GB1442290A
(en)
IT
(1)
IT1029935B
(en)
LU
(1)
LU71960A1
(en)
Families Citing this family (16)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4174460A
(en)
*
1974-03-06
1979-11-13
Bayer Aktiengesellschaft
Process for the hydroxylation of phenols and phenol ethers in the nucleus
FR2318851A1
(en)
*
1975-07-25
1977-02-18
Rhone Poulenc Ind
PROCESS FOR HYDROXYLATION OF AROMATIC COMPOUNDS
FR2392939A1
(en)
*
1977-06-01
1978-12-29
Midi Salines Est Cie Salins
Sterilising ion exchange resins using bactericidal salt soln. – prepd. from salt pastilles contg. isolated bactericide inside
US4258219A
(en)
*
1978-10-27
1981-03-24
Mitsui Toatsu Chemicals, Inc.
Process for producing hydroquinone
US4419528A
(en)
*
1979-10-05
1983-12-06
Pcuk – Produits Chimiques Ugine Kuhlmann
Regioselective preparation of α- or β-naphthol
DE2942366A1
(en)
*
1979-10-19
1981-04-30
Bayer Ag, 5090 Leverkusen
METHOD FOR PRODUCING MULTIPLE PHENOLES
FR2483403A1
(en)
*
1980-06-03
1981-12-04
Ugine Kuhlmann
PROCESS FOR THE META-HYDROXYLATION OF ALKYL-PHENOLS AND THEIR ETHERS IN A SUPERACID MEDIUM
DE3308769C2
(en)
*
1983-03-11
1985-01-24
Degussa Ag, 6000 Frankfurt
Process for the preparation of dihydroxybenzenes
DE3308726C2
(en)
*
1983-03-11
1991-01-24
Degussa Ag, 6000 Frankfurt
Process for the preparation of dihydroxybenzenes
DE3308763C2
(en)
*
1983-03-11
1985-01-24
Degussa Ag, 6000 Frankfurt
Process for the preparation of dihydroxybenzenes
DE3334854A1
(en)
*
1983-09-27
1985-04-11
Degussa Ag, 6000 Frankfurt
METHOD FOR PRODUCING NON-AQUEOUS HYDROGEN PEROXIDE SOLUTIONS AND USE THEREOF
US4814521A
(en)
*
1985-06-07
1989-03-21
Kureha Kagaku Kogyo Kabushiki Kaisha
Process for producing 2,6-dihydroxynaphthalene and 2,6-diacetoxynaphthalene
DE3607923A1
(en)
*
1986-03-11
1987-09-17
Degussa
METHOD FOR PRODUCING SUBSTITUTED TRIHYDROXYBENZOLES
DE3643206C1
(en)
*
1986-12-18
1988-03-24
Degussa
Process for the preparation of substituted dihydroxybenzenes
FR2649695A1
(en)
*
1989-07-11
1991-01-18
Rhone Poulenc Chimie
PROCESS FOR HYDROXYLATION OF PHENOLS AND PHENOL ETHERS
FR2655332A1
(en)
*
1989-12-05
1991-06-07
Rhone Poulenc Chimie
PROCESS FOR HYDROXYLATION OF PHENOLS AND ETHERS OF PHENOLS
Family Cites Families (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
NL130076C
(en)
*
1965-06-30
FR2071464A5
(en)
*
1969-12-30
1971-09-17
Rhone Poulenc Sa
DE2150657C3
(en)
*
1971-07-17
1978-10-26
Brichima S.P.A., Mailand (Italien)
Process for the preparation of a mixture of catechol and hydroquinone
1974
1974-03-06
DE
DE2410758A
patent/DE2410758C3/en
not_active
Expired
1975
1975-02-28
US
US05/553,939
patent/US4045496A/en
not_active
Expired – Lifetime
1975-03-04
LU
LU71960A
patent/LU71960A1/xx
unknown
1975-03-04
BE
BE153959A
patent/BE826244A/en
not_active
IP Right Cessation
1975-03-04
IT
IT48438/75A
patent/IT1029935B/en
active
1975-03-04
JP
JP50025712A
patent/JPS5753330B2/ja
not_active
Expired
1975-03-06
GB
GB934575A
patent/GB1442290A/en
not_active
Expired
1975-03-06
FR
FR757507047A
patent/FR2263217B1/fr
not_active
Expired
Also Published As
Publication number
Publication date
BE826244A
(en)
1975-09-04
US4045496A
(en)
1977-08-30
DE2410758B2
(en)
1980-04-30
IT1029935B
(en)
1979-03-20
DE2410758C3
(en)
1981-01-08
FR2263217A1
(en)
1975-10-03
JPS5753330B2
(en)
1982-11-12
FR2263217B1
(en)
1979-02-09
LU71960A1
(en)
1976-02-04
DE2410758A1
(en)
1975-09-18
JPS50121236A
(en)
1975-09-23
Similar Documents
Publication
Publication Date
Title
GB1442289A
(en)
1976-07-14
Process for the hydroxylation of phenol
GB1442290A
(en)
1976-07-14
Process for the hydroxylation of phenols and phenol ethers in the nucleus
GB1418704A
(en)
1975-12-24
Halogenation of aromatic and heteroaromatic compounds
GB1301709A
(en)
1973-01-04
ES8402797A1
(en)
1984-02-16
Preparation of hydrogen peroxide from its elements
GB1169072A
(en)
1969-10-29
Process for the Production of Dihydroxy Compounds Containing Carbonate Groups
GB1340740A
(en)
1974-01-30
Process for the manufacture of hydroquinone
JPH0579055B2
(en)
1993-11-01
ES8500880A1
(en)
1984-11-01
Process for the preparation of dihydroxybenzenes.
GB1428881A
(en)
1976-03-17
Process for the production of p-nitrotoluene-2-sulphonic acid
ES8308826A1
(en)
1983-10-01
Method of producing quinone derivatives.
Saito et al.
1979
The reaction of superoxide ion with vitamin K1 and its related compounds
DE3785284T2
(en)
1993-11-25
Process for the preparation of arylene oligomers.
FR2500453B1
(en)
1983-06-24
US3804865A
(en)
1974-04-16
Method of preparing self-condensation products of alkylphenols
US5026925A
(en)
1991-06-25
Method of producing catechol and hydroquinone
GB465070A
(en)
1937-04-30
Improvements in the manufacture and production of hydrogen peroxide
JPS6178750A
(en)
1986-04-22
Manufacture of quinones
GB981987A
(en)
1965-02-03
A process for the production of organic acetates
GB1455753A
(en)
1976-11-17
Process for de preparation of p-quinones
EP0373619A3
(en)
1991-11-06
Process for preparing para-hydroxybenzoic acid
GB1492255A
(en)
1977-11-16
Process for the preparation of chloroanthraquinones from nitroanthraquinones
US2779722A
(en)
1957-01-29
Process for recovery of naphthalene from crude naphthalene
ES434844A1
(en)
1976-11-16
Production of ethylphenols
EP0239643A4
(en)
1988-01-21
Process for oxidizing 2,6-diisopropylnaphthalene.
Legal Events
Date
Code
Title
Description
1976-11-24
PS
Patent sealed [section 19, patents act 1949]
1987-10-21
PCNP
Patent ceased through non-payment of renewal fee
