GB1452476A - Process for the preparation of tris-aminopyridines - Google Patents

Process for the preparation of tris-aminopyridines

Info

Publication number
GB1452476A
GB1452476A GB3190275A GB3190275A GB1452476A GB 1452476 A GB1452476 A GB 1452476A GB 3190275 A GB3190275 A GB 3190275A GB 3190275 A GB3190275 A GB 3190275A GB 1452476 A GB1452476 A GB 1452476A
Authority
GB
United Kingdom
Prior art keywords
compounds
aminopyridines
tris
preparation
image
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
GB3190275A
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Publication of GB1452476A publication Critical patent/GB1452476A/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
    • C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
    • C07D213/84—Nitriles
    • C07D213/85—Nitriles in position 3

Landscapes

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

Abstract

The starting compounds have the formulae <IMAGE> (R1 to R6, X and An<(-)> have the meaning stated in claim 1) and are heated up at 110 to 140 DEG C to rearrange to the compound of the formula <IMAGE> Compounds (II) with X = -CN and R4 = R5 = H are obtained by reacting corresponding compounds which have a chlorine or bromine atom in place of the radical -NR1R2 with an amine HNR1R2. It is then possible in the same step to heat further to form (I). The trisaminopyridines can be further processed to, for example, azo dyes.
GB3190275A 1974-07-31 1975-07-30 Process for the preparation of tris-aminopyridines Expired GB1452476A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742436897 DE2436897C2 (en) 1974-07-31 1974-07-31 Process for the preparation of trisaminopyridines

Publications (1)

Publication Number Publication Date
GB1452476A true GB1452476A (en) 1976-10-13

Family

ID=5922056

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3190275A Expired GB1452476A (en) 1974-07-31 1975-07-30 Process for the preparation of tris-aminopyridines

Country Status (8)

Country Link
JP (1) JPS5136460A (en)
BE (1) BE831845A (en)
BR (1) BR7504882A (en)
CH (1) CH613693A5 (en)
DE (1) DE2436897C2 (en)
ES (1) ES439850A1 (en)
FR (1) FR2330680A1 (en)
GB (1) GB1452476A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2381766A1 (en) * 1977-02-28 1978-09-22 Bristol Myers Co 4-Tert. amino-2,6-di:amino-pyridine-N=oxide cpds. - useful for reducing blood pressure

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE793317A (en) * 1971-12-28 1973-06-27 Ciba Geigy NEW BASIC AZOIC COLORANTS FREE OF WATER-SOLUBILIZING ACID GROUPS AND THEIR PREPARATION PROCESS
BE793316A (en) * 1971-12-28 1973-06-27 Ciba Geigy NEW AZOIC COLORANTS, THEIR PREPARATION PROCESS AND THEIR APPLICATION

Also Published As

Publication number Publication date
CH613693A5 (en) 1979-10-15
BR7504882A (en) 1976-07-13
BE831845A (en) 1976-01-29
DE2436897C2 (en) 1984-03-29
ES439850A1 (en) 1977-06-16
DE2436897A1 (en) 1976-02-19
FR2330680B1 (en) 1979-05-11
FR2330680A1 (en) 1977-06-03
JPS5136460A (en) 1976-03-27

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee