A straightforward route to helically chiral N-heteroaromatic compounds: practical synthesis of racemic 1,14-diaza[5]helicene and optically pure 1- and 2-aza[6]helicenes

Angew Chem Int Ed Engl. 2008;47(17):3188-91. doi: 10.1002/anie.200705463.
No abstract available