Wex B.; Kaafarani B.R.; Kirschbaum K.; Neckers D.C.
(WASHINGTON1155 16TH ST, NW, WASHINGTON, DC 20036 USA, 2005)
We report isomer-pure synthesis of thieno[2,3-f:5,4-f′]bis-[1] benzothiophene and thieno[3,2-f:4,5-f′]bis[1]benzothiophene, the anti and syn isomers of a pentacyclic compound consisting of alternating thiophene and benzene ...