Sc. Gupta et al., NOVEL POLYCYCLIC HETEROCYCLIC RING-SYSTEMS - SYNTHESIS OF BENZ[H]-INDENO[2,1-C]QUINOLINE AND BENZ[F]-INDENO[2,1-C]QUINOLINE, Journal of chemical research. Synopses, (1), 1994, pp. 34-35
Benz[h]- and benz[f]-indeno[2,1-c]quinolines have been synthesised by
condensation of 1- or 2-naphthylamine with 2-acylindan-1,3-diones foll
owed by cyclisation and reduction.