1105. Benzo[f]quinoline

Nomenclature

CAS number: 85-02-9
β-Naphthoquinoline; 5,6-benzoquinoline; naphthopyridine.
C13H9N; mol wt 179.22.
C 87.12%, H 5.06%, N 7.82%.

Description and references

Prepn from from β-naphthylamine by the Skraup reaction: Knueppel, Ber. 29, 703 (1896); Clem, Hamilton, J. Am. Chem. Soc. 62, 2349 (1940); Uhle, Jacobs, J. Org. Chem. 10, 76 (1945).

Chemical structure

Properties

Crystals from alcohol + water, mp 93°. bp721 349-350°. uv max (ethanol): 347, 331, 316, 266, nm (log ε 3.54, 3.41, 3.18, 4.06). Practically insol in water. Sol in dil acids; very sol in alcohol, ether, benzene.

Use

As a reagent for the determination of cadmium which is pptd as (C13H9N)2H2(CdI4) from dil nitric or sulfuric acid soln in the presence of potassium iodide.