N. One et al., SYNTHESIS OF PYRROLES ANNULATED WITH POLYCYCLIC AROMATIC-COMPOUNDS - PRECURSOR MOLECULES FOR LOW-BAND-GAP POLYMERS, Journal of the Chemical Society, Chemical Communications, (8), 1994, pp. 1019-1020
Pyrroles annulated with polycyclic aromatic compounds, which are expec
ted to be good precursor molecules for low band gap polymers, are prep
ared by the reaction of aromatic nitro compounds with ethyl isocyanoac
etate and the subsequent deethoxycarbonylation.