SYNTHETIC COMMUNICATIONS, 28(15), 2871-2886 (1998) ... 5 and 6 can be transformed to the condensed systems, triazolopyridopyridazines 14 and 15 through series of ... The reation of N-hydroxyquinolinimide 1 with aromatic amines, namely aniline5,6, p-toluidine, p-anisidine ...