GB252707A - A process for the production of iodised pyridine derivatives - Google Patents

A process for the production of iodised pyridine derivatives

Info

Publication number
GB252707A
GB252707A GB12659/26A GB1265926A GB252707A GB 252707 A GB252707 A GB 252707A GB 12659/26 A GB12659/26 A GB 12659/26A GB 1265926 A GB1265926 A GB 1265926A GB 252707 A GB252707 A GB 252707A
Authority
GB
United Kingdom
Prior art keywords
pyridine
iodides
oxy
prepared
solution
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
GB12659/26A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB252707A publication Critical patent/GB252707A/en
Expired legal-status Critical Current

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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
    • C07D213/63—One oxygen atom
    • C07D213/64—One oxygen atom attached in position 2 or 6

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

252,707. Rõth, C. May 28, 1925, [Convention date]. Iodo pyridine compounds are prepared by treating 3- or 5-amino-pyridine derivatives with acid and iodides, and then gradually adding alkali nitrite. A catalyst such as copper may be present during the reaction. An example is given according to which 2-oxy-5-iodopyridine is prepared by mixing a solution of potassium iodide with a solution of 2-oxy-5-aminopyridine hydrochloride in concentrated hydrochloric acid and gradually adding sodium nitrite. Specification 251,578 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) describes the starting materials as amino derivatives of pyridine containing, if desired, electronegative substituents such as chlorine, and mentions the use of substances containing iodine instead of iodides. This subject-matter does not appear in the Specification as accepted.
GB12659/26A 1925-05-28 1926-05-17 A process for the production of iodised pyridine derivatives Expired GB252707A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE252707X 1925-05-28

Publications (1)

Publication Number Publication Date
GB252707A true GB252707A (en) 1927-08-11

Family

ID=5949319

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12659/26A Expired GB252707A (en) 1925-05-28 1926-05-17 A process for the production of iodised pyridine derivatives

Country Status (1)

Country Link
GB (1) GB252707A (en)

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