8-Aminoquinoline

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8-Aminoquinoline
Names
Preferred IUPAC name
Quinolin-8-amine
Identifiers
3D model (
JSmol
)
ChEMBL
ChemSpider
ECHA InfoCard
100.008.572 Edit this at Wikidata
UNII
  • InChI=1S/C9H8N2/c10-8-5-1-3-7-4-2-6-11-9(7)8/h1-6H,10H2 checkY
    Key: WREVVZMUNPAPOV-UHFFFAOYSA-N checkY
  • Nc1cccc2cccnc12
Properties
C9H8N2
Molar mass 144.177 g·mol−1
Appearance pale yellow solid
Density 1.337 g/cm3[1]
Melting point 65 °C (149 °F; 338 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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8-Aminoquinoline is the 8-amino derivative of

8-hydroxyquinoline.[2]

Drug derivatives

The derivatives primaquine, tafenoquine and pamaquine have been tested for anti-malaria activity.[3][4] Primaquine is still used routinely worldwide as part of the treatment of Plasmodium vivax and Plasmodium ovale malaria, although how it prevents malarial recurrences is not, at present, clear.[5] Tafenoquine was approved for medical use in Australia and in the United States in 2018.[6][7]

Directing group

The amine functional group is amenable to formation of amides, and thus can serve as a directing group in organic synthesis.[8][9]

Preparation

The original synthesis of AQ involved nitration of quinoline to give a mixture of the 5- and 8-nitroderivatives, which were separated by distillation and sublimation. Reduction of the 8-nitro isomer with tin powder in the presence of hydrochloric acid gave the amines.[10] AQ can also be produced by amination of 8-chloroquinoline.

References