An efficient synthesis of phenyl-substituted dibenzonaphthyridines

Article abstract of DOI:10.3184/030823409X466726

A one-pot synthesis of 9-chloro-6-methyl-7-phenyldibenzo[b,h][1,6] naphthyridines from 4-chloro-2-methylquinolines is reported. Since the yield of the dibenzonaphthyridine was low, in an alternative method the title compounds were prepared from the 4-chlo