Cyclopentannulation and cyclodehydrogenation of isomerically pure 5, 11-dibromo-anthradithiophenes leading to contorted aromatics. Issue 100 (30th November 2018) - Bheemireddy, Sambasiva R.
Abstract : Isomerically pure 5, 11-dibromo-ADT was used to create contorted aromatics with large splay angles, low band gaps, and low LUMOs. Abstract : Isomerically pure 5, 11-dibromo-2, 8-dihexylanthra[2, 3- b :76- b ′]dithiophene, a brominated analog of anthracenedithiophene (ADT), was prepared and utilized for a palladium catalyzed cyclopentannulation reaction with 3, 3′-dimethoxy-phenylacetylene to give cyclopentannulated ADT (CP-ADTs). A further Scholl cyclodehydrogenation reaction gave contorted aromatics with large splay angles, low optical gaps, and low LUMOs.