1117. 3,4-Benzphenanthrene

Nomenclature

CAS number: 195-19-7
Benzo[c]phenanthrene.
C18H12; mol wt 228.29.
C 94.70%, H 5.30%.

Description and references

Synthesis by a Pschorr reaction from diazotized α-(2-naphthyl)-2-aminocinnamic acid: Cook, J. Chem. Soc. 1931, 2524. From diphenylmethylsuccinic anhydride: Hewett, J. Chem. Soc. 1936, 599. By double ring closure of β-benzohydrylglutaric acid: Newman, Joshel, J. Am. Chem. Soc. 60, 487 (1938). From 4-keto-1,2,3,4-tetrahydrophenanthrene: Bachmann, Edgerton, ibid. 62, 2970 (1940).

Chemical structure

Properties

Needles from alcohol, mp 68° (needles or leaflets from petr ether, fine needles from alcohol + acetone). Absorption maxima: Mayneord, Roe, Proc. R. Soc. London A158, 63 (1937).