engleski

Photosynthesis of heteropolycyclic diquinolones twofold photodehydrohalogenation reaction of benzo[1, 2-b:4, 5-b']dithiophene- and dithieno[3, 2-b:2', 3'-d]thiophenedicarboxanilides

Heteropolycyclic diquinolones ; benzo[1, 2-b:4, 5-b']dithieno[2', 3'-c':2 '', 3 '' c '']-5, 13-N, N'-dimethyldiquinoline-6, 14-dione(9) and dithieno[3, 2-b:2', 3'-d]thienyl[2 '' , 3 ''-c:2 '', 3 ''-c']-5, 10-N, N-dimethyldiquinoline-6, 9-dione (17) are prepared by twofold photochemical dehydrohalogenation reaction of corresponding benzodithiophene- and dithienothiophenedicarboxanilides ; 3, 7-dichloro-N, N'-dimethylbenzo [1, 2-b ; 4, 5-b']dithiophene-2, 6-dicarboxanilide (8) and 3, 5-dichloro-N, N'-dimethyldithieno[3, 2-b:2', 3'-d]thiophene-2, 6-dicarboxanilide (16). The products of onefold photochemical dehydrohalogenation reaction, anilidoquinolones ; 9-chloro-10-N'-methylanilidobenzo[1, 2-b:4, 5-b']dithieno[2, 3-c']-5-N-methylquinolin-6-one (10) and 10-chloro-9-N'-methylanilidodithieno [3, 2- b:2', 3'-d] thienyl[2 '', 3 ''-c']-5-N-methylquinolin-6-one (18) were also isolated to prove the mechanism of the reaction.

photocyclization

nije evidentirano