GB936120A - New process for obtaining benzoxazoles - Google Patents

New process for obtaining benzoxazoles

Info

Publication number
GB936120A
GB936120A GB4180760A GB4180760A GB936120A GB 936120 A GB936120 A GB 936120A GB 4180760 A GB4180760 A GB 4180760A GB 4180760 A GB4180760 A GB 4180760A GB 936120 A GB936120 A GB 936120A
Authority
GB
United Kingdom
Prior art keywords
chloro
methyl
aminophenols
benzoxazole
nitro
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
GB4180760A
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.)
PROD CHIM ET DE SYNTHESE SOC D
Original Assignee
PROD CHIM ET DE SYNTHESE SOC D
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 PROD CHIM ET DE SYNTHESE SOC D filed Critical PROD CHIM ET DE SYNTHESE SOC D
Publication of GB936120A publication Critical patent/GB936120A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D263/00—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings
    • C07D263/52—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings condensed with carbocyclic rings or ring systems
    • C07D263/54—Benzoxazoles; Hydrogenated benzoxazoles
    • C07D263/56—Benzoxazoles; Hydrogenated benzoxazoles with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached in position 2
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D263/00—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings
    • C07D263/52—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings condensed with carbocyclic rings or ring systems
    • C07D263/60—Naphthoxazoles; Hydrogenated naphthoxazoles
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • C08K5/35—Heterocyclic compounds having nitrogen in the ring having also oxygen in the ring
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K15/00—Anti-oxidant compositions; Compositions inhibiting chemical change
    • C09K15/04—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds
    • C09K15/30—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing heterocyclic ring with at least one nitrogen atom as ring member
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B5/00—Preserving by using additives, e.g. anti-oxidants
    • C11B5/0042—Preserving by using additives, e.g. anti-oxidants containing nitrogen
    • C11B5/0064—Heterocyclic compounds containing nitrogen in the ring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Materials Engineering (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)

Abstract

The invention comprises 5-chloro-, 6-nitro-, 5-chloro-6-methyl-, 5-chloro-7-methyl-and 5-methyl-7-chloro-benzoxazole and a method of making benzoxazoles of the general formula <FORM:0936120/IV(a)/1> in which R1, R2, R3 and R4 each represent a hydrogen atom, a halogen atom, an alkyl group, or nitro group or a sulphonic acid group or two of them together with the carbon atoms to which they are attached form a benzene ring, by heating an orthoaminophenol of the general formula <FORM:0936120/IV(a)/2> with an orthoformic acid ester. Suitable aminophenols for use as starting materials are, for example, o-aminophenol, methyl-o-aminophenols, ethyl-o-aminophenols, di-methyl-o-aminophenols, chloro-o-aminophenols, bromo-o-aminophenols, fluoro-o-aminophenols, nitro-o-aminophenols, o-aminonaphthol, 3-amino-4-hydroxybenzene-1-sulphonate and trifluoromethyl-o-aminophenol. The process may be carried out in the presence of a solvent. Examples are given of the preparation of 6-nitrobenoxazole, a -naphthoxazole, 5-methyl-benzoxazole, 5-chloro-6-methyl benzoxazole, 5-chloro-7-methyl-benzoxazole, 5-methyl-7-chloro-benzoxazole, benzoxazole and 5-chloro-benzoxazole.
GB4180760A 1960-01-28 1960-12-05 New process for obtaining benzoxazoles Expired GB936120A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR816879 1960-01-28

Publications (1)

Publication Number Publication Date
GB936120A true GB936120A (en) 1963-09-04

Family

ID=8724409

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4180760A Expired GB936120A (en) 1960-01-28 1960-12-05 New process for obtaining benzoxazoles

Country Status (2)

Country Link
ES (1) ES264393A1 (en)
GB (1) GB936120A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3696193A (en) * 1966-04-21 1972-10-03 Ciba Geigy Ag Cosmetic preparation containing 2-phenyl-benzoxazoles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3696193A (en) * 1966-04-21 1972-10-03 Ciba Geigy Ag Cosmetic preparation containing 2-phenyl-benzoxazoles

Also Published As

Publication number Publication date
ES264393A1 (en) 1961-06-16

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