... Abstract 4-Phenyl-4H-cyclopenta[c]cinnoline (4) reacts with trifluoroacetic anhydride, N-chlorosuccinimide and p-tolyldiazonium tetrafluoroborate to give the mixture and 3-substituted derivatives. Compounds (4) reacts with a N-bromosuccin-imide and tetranitrometane to give only the 1-substituted compounds. ... Moscow University Chemistry Bulletin . 2003, Vol. ... 6, P. 385 . Copyright (C) Chemistry Dept., ... Copyright (C) Chemisty Department of Moscow State University . ...