GB560965A - Processes for producing pyrazine from pyrazine-carboxylic acids - Google Patents

Processes for producing pyrazine from pyrazine-carboxylic acids

Info

Publication number
GB560965A
GB560965A GB1679442A GB1679442A GB560965A GB 560965 A GB560965 A GB 560965A GB 1679442 A GB1679442 A GB 1679442A GB 1679442 A GB1679442 A GB 1679442A GB 560965 A GB560965 A GB 560965A
Authority
GB
United Kingdom
Prior art keywords
pyrazine
processes
carboxylic acids
producing
carboxylic acid
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
GB1679442A
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.)
Mead Johnson and Co LLC
Original Assignee
Mead Johnson and Co LLC
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 Mead Johnson and Co LLC filed Critical Mead Johnson and Co LLC
Priority to GB1679442A priority Critical patent/GB560965A/en
Publication of GB560965A publication Critical patent/GB560965A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D241/00—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings
    • C07D241/02—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings
    • C07D241/10—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
    • C07D241/14—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D241/24—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

Pyrazine is made by suspending a pyrazine-carboxylic acid in an inert high boiling liquid such as diethyl- or di-n-butyl-phthalate, and heating the suspension to about 200 DEG C. until decarboxylation occurs and the pyrazine distills from the reaction mixture. Examples are given starting with pyrazinemono-, -2,3-di-, -2,3,5-tri-, and -tetra-carboxylic acid.
GB1679442A 1942-11-26 1942-11-26 Processes for producing pyrazine from pyrazine-carboxylic acids Expired GB560965A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1679442A GB560965A (en) 1942-11-26 1942-11-26 Processes for producing pyrazine from pyrazine-carboxylic acids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1679442A GB560965A (en) 1942-11-26 1942-11-26 Processes for producing pyrazine from pyrazine-carboxylic acids

Publications (1)

Publication Number Publication Date
GB560965A true GB560965A (en) 1944-04-28

Family

ID=10083783

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1679442A Expired GB560965A (en) 1942-11-26 1942-11-26 Processes for producing pyrazine from pyrazine-carboxylic acids

Country Status (1)

Country Link
GB (1) GB560965A (en)

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