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GB542736A - Process for the manufacture of 2-methyl-4, 6-dioxo-5-iodo-tetrahydropyridine-1-acetic acid - Google Patents

Process for the manufacture of 2-methyl-4, 6-dioxo-5-iodo-tetrahydropyridine-1-acetic acid

Info

Publication number
GB542736A
GB542736A GB13700/40A GB1370040A GB542736A GB 542736 A GB542736 A GB 542736A GB 13700/40 A GB13700/40 A GB 13700/40A GB 1370040 A GB1370040 A GB 1370040A GB 542736 A GB542736 A GB 542736A
Authority
GB
United Kingdom
Prior art keywords
methyl
tetrahydropyridine
dioxo
acetic acid
iodo
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
GB13700/40A
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.)
F Hoffmann La Roche AG
Original Assignee
F Hoffmann La Roche 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.)
Filing date
Publication date
Application filed by F Hoffmann La Roche AG filed Critical F Hoffmann La Roche AG
Publication of GB542736A publication Critical patent/GB542736A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom 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
    • C07D213/62—Oxygen or sulfur atoms
    • C07D213/69—Two or more oxygen atoms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

542,736. Pyridine derivatives. HOFFMANNLA ROCHE & CO., AKT.-GES., F. Aug. 31, 1940, No. 13760. Convention date, July 14, 1939. [Class 2 (iii)] 2 - Methyl - 4 : 6 - dioxo - 5 - iodo - tetrahydropyridine-1-acetic acid is prepared by treating 2 - methyl - 4 : 6 - dioxo - tetrahydropyridine-I-acetic acid with iodinating agents. In examples 2-methyl-2 6-dioxo-tetrahydropyridine-1-acetic acid prepared from 2-methyl- 4 : 6-dioxypyridine with chloracetic acid in alkaline solution, is treated (1) with iodine mono-chloride in hydrochloric acid solution, (2) with iodine and potassium iodide in caustic soda solution, and (3) iodine and potassium iodide in aqueous ammonia solution.
GB13700/40A 1939-07-14 1940-08-31 Process for the manufacture of 2-methyl-4, 6-dioxo-5-iodo-tetrahydropyridine-1-acetic acid Expired GB542736A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH542736X 1939-07-14

Publications (1)

Publication Number Publication Date
GB542736A true GB542736A (en) 1942-01-26

Family

ID=4519171

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13700/40A Expired GB542736A (en) 1939-07-14 1940-08-31 Process for the manufacture of 2-methyl-4, 6-dioxo-5-iodo-tetrahydropyridine-1-acetic acid

Country Status (1)

Country Link
GB (1) GB542736A (en)

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