GB1428271A - Hydroxylation of aromatic compounds - Google Patents

Hydroxylation of aromatic compounds

Info

Publication number
GB1428271A
GB1428271A GB3037173A GB3037173A GB1428271A GB 1428271 A GB1428271 A GB 1428271A GB 3037173 A GB3037173 A GB 3037173A GB 3037173 A GB3037173 A GB 3037173A GB 1428271 A GB1428271 A GB 1428271A
Authority
GB
United Kingdom
Prior art keywords
acid
aromatic compounds
hydroxylation
june
conversion
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.)
Expired
Application number
GB3037173A
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.)
Rhone Poulenc SA
Original Assignee
Rhone Poulenc SA
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 Rhone Poulenc SA filed Critical Rhone Poulenc SA
Publication of GB1428271A publication Critical patent/GB1428271A/en
Expired legal-status Critical Current

Links

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1428271 Hydroxylation of aromatic compounds RHONE-POULENC SA 26 June 1973 [27 June 1972] 30371/73 Heading C2C Aromatic compounds of the Formula I in which R and R<SP>1</SP> are hydrogen or C 1 -C 4 alkyl radicals, are hydroxylated by treating with performic acid, which is formed in situ from hydrogen peroxide and formic acid, in the presence of an inorganic or organic acid with a pk H2O greater than - 0À1 but not greater than 2, the molar ratio of hydrogen peroxide to formic acid being greater than 2 : 1 and the degree of conversion of the aromatic compound being not more than 30%. Suitable acids having the specified pk H2O are, for example, pyrophosphoric acid, trifluoroacetic acid and picric acid. Where the acid does not contain phosphorus a complexing agent, e.g. orthophosphoric and its acid esters may be present. Examples describe the conversion of phenol to pyrocatechol and a lesser amount of hydroquinol.
GB3037173A 1972-06-27 1973-06-26 Hydroxylation of aromatic compounds Expired GB1428271A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7223175A FR2190787B1 (en) 1972-06-27 1972-06-27

Publications (1)

Publication Number Publication Date
GB1428271A true GB1428271A (en) 1976-03-17

Family

ID=9100884

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3037173A Expired GB1428271A (en) 1972-06-27 1973-06-26 Hydroxylation of aromatic compounds

Country Status (14)

Country Link
JP (1) JPS4962430A (en)
AR (1) AR195023A1 (en)
AU (1) AU5733373A (en)
BE (1) BE801462A (en)
BR (1) BR7304692D0 (en)
CH (1) CH575359A5 (en)
DD (1) DD104285A5 (en)
DE (1) DE2332747A1 (en)
FR (1) FR2190787B1 (en)
GB (1) GB1428271A (en)
IT (1) IT990733B (en)
LU (1) LU67874A1 (en)
NL (1) NL7308513A (en)
PL (1) PL85551B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998047843A1 (en) * 1997-04-17 1998-10-29 Novartis Ag Process for the hydroxylation of 1,4-dichlorobenzene
US6323377B1 (en) 1995-06-07 2001-11-27 Syngenta Participations Ag Oxidation process

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5833207B2 (en) * 1975-08-28 1983-07-18 工業技術院長 Nikafuenoru no seizouhouhou
JPS5265232A (en) * 1975-11-21 1977-05-30 Ube Ind Ltd Industrial preparation of divalent phenols
DE2942366A1 (en) * 1979-10-19 1981-04-30 Bayer Ag, 5090 Leverkusen METHOD FOR PRODUCING MULTIPLE PHENOLES
JPS5946932B2 (en) * 1981-09-08 1984-11-15 三菱瓦斯化学株式会社 Production method of p-cresol

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6323377B1 (en) 1995-06-07 2001-11-27 Syngenta Participations Ag Oxidation process
WO1998047843A1 (en) * 1997-04-17 1998-10-29 Novartis Ag Process for the hydroxylation of 1,4-dichlorobenzene

Also Published As

Publication number Publication date
BR7304692D0 (en) 1974-08-29
DD104285A5 (en) 1974-03-05
CH575359A5 (en) 1976-05-14
NL7308513A (en) 1974-01-02
DE2332747A1 (en) 1974-01-10
AU5733373A (en) 1975-01-09
JPS4962430A (en) 1974-06-17
FR2190787B1 (en) 1974-07-26
PL85551B1 (en) 1976-04-30
AR195023A1 (en) 1973-08-30
BE801462A (en) 1973-12-26
LU67874A1 (en) 1974-01-03
IT990733B (en) 1975-07-10
FR2190787A1 (en) 1974-02-01

Similar Documents

Publication Publication Date Title
GB1301709A (en)
GB1425197A (en) Process for preventing corrosion and the formation of scale in water
ES454693A1 (en) Process for the production of inorganic-organic plastics
KR840003298A (en) Metal phosphate chemical coating method
GB1428271A (en) Hydroxylation of aromatic compounds
ES311715A1 (en) Procedure for the preparation of azocompuestos. (Machine-translation by Google Translate, not legally binding)
ES489823A1 (en) Catalyst, its preparation and process for polymerizing butadiene.
SE363626B (en)
ES8702425A1 (en) Phosphoric esters and method for preparing the same
GB1433545A (en) Hydroxylation of aromatic compounds
KR850001722A (en) Method for preparing benzoic acid derivatives having antibacterial activity
GB1391583A (en) Hydroxylation of aromatic compounds
ES8104167A1 (en) Process for the hydroxylation of low-chain aliphatic mono- or diolefines.
GB916171A (en) Improvements in or relating to diphenyl ethylene compounds having oestrogenic activity and processes for their preparation
MX169858B (en) PROCEDURE FOR PRODUCING PAINT
GB1464067A (en) Process for preparing hydroxyphenol ethers
ES2055089T3 (en) PROCEDURE TO PREPARE 4-METHYLPIRAZOLES.
RO93906B (en) Additive inhibiting water corrosion and process for preparing the same
GB1497992A (en) Production of carboxy-alkane-phosphonic acids and carboxy-alkyl-phosphinic acids
GB1358333A (en) Production of organic solution of percarboxylic acid
SE7507318L (en) PROCEDURE FOR THE PRODUCTION OF AROMATIC URETANES.
Chizhevsky et al. Cationic alkoxyallylolefin complexes of rhodium,[Rh (η2-5, 6-η3-2, 3, 8, C7H7-CHOR)(η5-C5H5)]+ An−, as key intermediates in the synthesis and hydrolysis of 2-formylnorbornadienecyclopentadienylrhodium dialkylacetals
DE3277016D1 (en) Process for making gibberellins
ES436627A1 (en) Procedure for the preparation of chromenum derivatives. (Machine-translation by Google Translate, not legally binding)
JPS56152821A (en) Production of modified aromatic hydrocarbon resin

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees