Synthesis and characterization of S,N-heterotetracenes

• Astrid Vogt,
• Florian Henne,
• Christoph Wetzel,
• Elena Mena-Osteritz and
• Peter Bäuerle

Beilstein J. Org. Chem. 2020, 16, 2636–2644, doi:10.3762/bjoc.16.214

• -Nitrophenyl)thieno[3,2-b]thiophene (18) was similarly prepared by Pd-catalyzed Stille-type reaction of monostannylated thienothiophene 14 and o-iodonitrobenzene (17) in 86% yield. Successive Cadogan cyclization of 18 with triethyl phosphite under reflux gave tetracyclic 9H-thieno[2’,3’:4,5]thieno[3,2-b]indole

Synthesis of aryl-substituted thieno[3,2-b]thiophene derivatives and their use for N,S-heterotetracene construction

• Nadezhda S. Demina,
• Nikita A. Kazin,
• Nikolay A. Rasputin,
• Roman A. Irgashev and
• Gennady L. Rusinov

Beilstein J. Org. Chem. 2019, 15, 2678–2683, doi:10.3762/bjoc.15.261

• ]thiophene; thieno[2',3':4,5]thieno[3,2-b]indole; Introduction The thieno[3,2-b]thiophene (TT) unit is highly demanded in modern organic synthesis since TT-based compounds have a variety of applications, e.g., in the field of organic electronics. Indeed, TT-based polymers and small molecules are used as