title: Construction of Heteroacenes with Fused Thiophene and Pyrrole Rings via the Fischer Indolization Reaction.
abstract: A convenient approach to ladder-type 6H-benzo[4',5']thieno[2',3':4,5]thieno[3,2-b]indoles bearing various substituents in both terminal benzene rings has been developed. The protocol suggested for preparing these N,S-heteroacenes is based on using easily available reagents, such as cinnamic acids and arylhydrazines, which can be involved in the Fischer indole synthesis, as the key step. A similar condensed system of 12H-benzo[4″,5″]thieno[2″,3″:4',5']thieno[2',3':4,5]thieno[3,2-b]indole, bearing six rings, has also been obtained.
authors: Postovsky Institute of Organic Synthesis, Ural Division of the Russian Academy of Sciences , Ekaterinburg 620990, Russia.|Ural Federal University named after the First President of Russia, B.N. Yeltsin , Ekaterinburg 620002, Russia.
authors: Roman A
authors: RA
authors: Irgashev
authors: Postovsky Institute of Organic Synthesis, Ural Division of the Russian Academy of Sciences , Ekaterinburg 620990, Russia.|Ural Federal University named after the First President of Russia, B.N. Yeltsin , Ekaterinburg 620002, Russia.
authors: Arseny A
authors: AA
authors: Karmatsky
authors: Postovsky Institute of Organic Synthesis, Ural Division of the Russian Academy of Sciences , Ekaterinburg 620990, Russia.|Ural Federal University named after the First President of Russia, B.N. Yeltsin , Ekaterinburg 620002, Russia.
authors: Gennady L
authors: GL
authors: Rusinov
authors: Postovsky Institute of Organic Synthesis, Ural Division of the Russian Academy of Sciences , Ekaterinburg 620990, Russia.|Ural Federal University named after the First President of Russia, B.N. Yeltsin , Ekaterinburg 620002, Russia.
authors: Valery N
authors: VN
authors: Charushin