Beilstein J. Org. Chem.2019,15, 1379–1393, doi:10.3762/bjoc.15.138
crucial cyclization steps to the stable and soluble fused systems were achieved by copper-catalyzed C–S and C–Secoupling/cyclization reactions. Structures and packing motifs in the solid state were elucidated by single crystal X-ray analysis and XRD powder measurements. Comparison of the optoelectronic
properties provides interesting structure–property relationships and gives valuable insights into the role of heteroatoms within the series of the heterotriacenes. Electrooxidative polymerization led to the corresponding poly(heterotriacene)s P2–P4.
Keywords: conducting polymer; C–S coupling; C–Secoupling
preparation, efficient multistep synthesis routes with good overall yields based on recently published transition metal-catalyzed C–S and C–Secoupling/cyclization reactions in the crucial cyclization steps of iodinated bithiophene and biselenophene precursors. Heterotriacenes 1–4 turned out to be stable and
PDF
Graphical Abstract
Figure 1:
Heterotriacenes DTT 1, DTS 2, DST 3, and DSS 4 with varying number of selenium atoms and fused sele...