Synthesis and oxidation of 2-furyl-4-R-substituted and furo[3,2-c]- condensed 1,2,3,4-tetrahydro-1,10-phenanthrolines and quinolines

2-Furyl-4-substituted and furo[2,3-c]-condensed 1,2,3,4-tetrahydro-1,10- phenanthrolines were obtained for the first time from 8-aminoquinolines using the Povarov reaction. Various oxidizing agents were shown to effect the elimination of the substituent at C(4) with subsequent aromatization of the tetrahydroquinoline fragment. © 2009 Springer Science+Business Media, Inc.