NL151706B - PROCESS FOR THE PREPARATION OF COMIC ACID. - Google Patents

PROCESS FOR THE PREPARATION OF COMIC ACID.

Info

Publication number
NL151706B
NL151706B NL727216463A NL7216463A NL151706B NL 151706 B NL151706 B NL 151706B NL 727216463 A NL727216463 A NL 727216463A NL 7216463 A NL7216463 A NL 7216463A NL 151706 B NL151706 B NL 151706B
Authority
NL
Netherlands
Prior art keywords
preparation
comic
acid
comic acid
Prior art date
Application number
NL727216463A
Other languages
Dutch (nl)
Other versions
NL7216463A (en
Original Assignee
Pfizer
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
Priority claimed from US171732A external-priority patent/US3130204A/en
Priority claimed from US202103A external-priority patent/US3133089A/en
Priority claimed from US202101A external-priority patent/US3159652A/en
Priority claimed from US202102A external-priority patent/US3171842A/en
Application filed by Pfizer filed Critical Pfizer
Priority to NL727216463A priority Critical patent/NL151706B/en
Publication of NL7216463A publication Critical patent/NL7216463A/xx
Publication of NL151706B publication Critical patent/NL151706B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D309/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
    • C07D309/34—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
    • C07D309/36—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with oxygen atoms directly attached to ring carbon atoms
    • C07D309/40—Oxygen atoms attached in positions 3 and 4, e.g. maltol
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L27/00—Spices; Flavouring agents or condiments; Artificial sweetening agents; Table salts; Dietetic salt substitutes; Preparation or treatment thereof
    • A23L27/20—Synthetic spices, flavouring agents or condiments
    • A23L27/205—Heterocyclic compounds
    • A23L27/2052—Heterocyclic compounds having oxygen or sulfur as the only hetero atoms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Nutrition Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
NL727216463A 1961-11-21 1972-12-05 PROCESS FOR THE PREPARATION OF COMIC ACID. NL151706B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL727216463A NL151706B (en) 1961-11-21 1972-12-05 PROCESS FOR THE PREPARATION OF COMIC ACID.

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US15403661A 1961-11-21 1961-11-21
US171732A US3130204A (en) 1962-02-07 1962-02-07 Preparation of gamma-pyrones
US202103A US3133089A (en) 1962-06-13 1962-06-13 Preparation of gamma pyrones
US202101A US3159652A (en) 1962-06-13 1962-06-13 Preparation of gamma-pyrones
US202102A US3171842A (en) 1962-06-13 1962-06-13 Preparation of gamma pyrones
NL285689 1962-11-20
NL727216463A NL151706B (en) 1961-11-21 1972-12-05 PROCESS FOR THE PREPARATION OF COMIC ACID.

Publications (2)

Publication Number Publication Date
NL7216463A NL7216463A (en) 1973-03-26
NL151706B true NL151706B (en) 1976-12-15

Family

ID=27555185

Family Applications (2)

Application Number Title Priority Date Filing Date
NL727216462A NL154738B (en) 1961-11-21 1972-12-05 PROCESS FOR PREPARING MALTOL.
NL727216463A NL151706B (en) 1961-11-21 1972-12-05 PROCESS FOR THE PREPARATION OF COMIC ACID.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NL727216462A NL154738B (en) 1961-11-21 1972-12-05 PROCESS FOR PREPARING MALTOL.

Country Status (1)

Country Link
NL (2) NL154738B (en)

Also Published As

Publication number Publication date
NL7216463A (en) 1973-03-26
NL154738B (en) 1977-10-17
NL7216462A (en) 1973-03-26

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Legal Events

Date Code Title Description
NL80 Abbreviated name of patent owner mentioned of already nullified patent

Owner name: PFIZER

V4 Lapsed because of reaching the maximum lifetime of a patent