Etude de nouveaux systemes aromatiques possédant des propriétes diéniques: [2]benzothiéno[5,6-g] phtalazines,thiéno[3,4-g]phtalazines et leurs analogues furanniques

Derivatives of new polydienic systems have been isolated. Two 2]benzothienophthalazines, nitrogenous analogues of unknown anthra2,3-c]thiophens are described. A furo3,4-g]-phtalazine and a thieno3,4-g]phthalazine are isolated. These different compounds react with philodienes. The first tetraza-2,3,8,9-naphthacenes have been synthesized. Structures of these compounds are proved by chemical and spectrographical methods.