GB1208580A - Preparation of 2-amino-3-nitropyridines - Google Patents

Preparation of 2-amino-3-nitropyridines

Info

Publication number
GB1208580A
GB1208580A GB5080967A GB5080967A GB1208580A GB 1208580 A GB1208580 A GB 1208580A GB 5080967 A GB5080967 A GB 5080967A GB 5080967 A GB5080967 A GB 5080967A GB 1208580 A GB1208580 A GB 1208580A
Authority
GB
United Kingdom
Prior art keywords
amino
chloropyridine
nitropyridines
nitrate
substituted
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
GB5080967A
Inventor
Michael Illingworth
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.)
Fisons Pest Control Ltd
Original Assignee
Fisons Pest Control Ltd
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 Fisons Pest Control Ltd filed Critical Fisons Pest Control Ltd
Priority to GB5080967A priority Critical patent/GB1208580A/en
Publication of GB1208580A publication Critical patent/GB1208580A/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
    • C07D213/72—Nitrogen atoms
    • C07D213/73—Unsubstituted amino or imino radicals
    • 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
    • C07D213/72—Nitrogen atoms
    • C07D213/76—Nitrogen atoms to which a second hetero atom is attached
    • C07D213/77—Hydrazine radicals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pyridine Compounds (AREA)

Abstract

1,208,580. 2 - Amino - 3 - nitropyridines. FISONS PEST CONTROL Ltd. 5 Feb., 1969 [8 Nov., 1967], No. 50809/67. Heading C2C. 2-Amino-3-nitropyridines of general formula (in which R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> are the same or different and represent hydrogen (except for R<SP>2</SP>), alkyl, alkoxy, aryloxy, substituted aryloxy, nitro, halogen, substituted alkyl, carboxy, and mono- or di-substituted amino) are prepared by reacting either the nitrate salt of the corresponding 2-aminopyridine unsubstituted at position 3, or the corresponding 2-nitraminopyridine unsubstituted at position 3 with trifluoracetic acid. An excess of the acid, e.g. 5-12 moles/ mole amine is normally used and the reaction is preferably effected at a temperature between 60‹ C. and reflux temperature. Examples detail the preparation of 2-amino-3-nitro-5-chloropyridine from 2-amino-5-chloropyridine nitrate and from 2-nitramino-5-chloropyridine, itself prepared by treating 2-amino-5-chloropyridine nitrate with concentrated H 2 SO 4 below 30‹ C. or by treating 2-amino-5-chloropyridine with excess HNO 3 at 35-40‹ C.
GB5080967A 1967-11-08 1967-11-08 Preparation of 2-amino-3-nitropyridines Expired GB1208580A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5080967A GB1208580A (en) 1967-11-08 1967-11-08 Preparation of 2-amino-3-nitropyridines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5080967A GB1208580A (en) 1967-11-08 1967-11-08 Preparation of 2-amino-3-nitropyridines

Publications (1)

Publication Number Publication Date
GB1208580A true GB1208580A (en) 1970-10-14

Family

ID=10457454

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5080967A Expired GB1208580A (en) 1967-11-08 1967-11-08 Preparation of 2-amino-3-nitropyridines

Country Status (1)

Country Link
GB (1) GB1208580A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110218179A (en) * 2018-03-02 2019-09-10 新发药业有限公司 A kind of environment-friendly preparation method of the chloro- 3- nitropyridine of 4- amino -2-

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110218179A (en) * 2018-03-02 2019-09-10 新发药业有限公司 A kind of environment-friendly preparation method of the chloro- 3- nitropyridine of 4- amino -2-

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees