Tetraarylthieno [3

In the paper "Programmed Synthesis of Tetraarylthieno[3,2-b]thiophene by Site-Selective Suzuki Cross-Coupling Reactions of Tetrabromothieno[3,2-b]thiophene", Thieno[3,2-b]thiophene is a structural motif that can be found in many important organic materials. A number of mono-, diand tetraarylthieno[3,2-b]thiophenes are reported herein.

4p runordie3 27-06-2022 11 2   Download

In this work, an attempt to planarize 2,3,4,6- tetraarylthieno[3,2-b]thiophene based on the FeCl3 oxidative annulation was described. Thus, two cyclized 2,3,5,6-tetraarylthieno[3,2-b]thiophenes 5a and 5b were synthesized in moderate yields. NMR and HR-MS analysis indicated the annulation between only one pair of the phenyl substituents.

8p tamynhan9 02-12-2020 11 2   Download