Abstract
Condensation of 3,4-diethylpyrrole with 1,3-diformylindane in the presence of catalytic HBr afforded, following oxidation with FeCl
3
, the first example of a dicarbaporphyrin in moderate yield; this novel bridged annulene system retains a strong diamagnetic ring current in
1
H NMR spectroscopy as well as a porphyrin-like UV-VIS spectrum.