Domino Cyclization/Electrocyclization/Elimination Reactions of Arylacetonitriles with N,N′‐Bis(1‐naphthyl)oxaldiimidoyl Dichlorides: Efficient Synthesis of Fluorescent 15H‐Benzo[h]benzo[6,7]indolo[3,2‐b]quinolines

Abstract

15H‐Benzo[h]benzo[6,7]indolo[3,2‐b]quinolines were prepared by domino cyclization/electrocyclization/elimination reactions of nitriles with N,N′‐bis(1‐naphthyl)oxaldiimidoyl dichlorides. The products can be regarded as hexacyclic δ‐carbolines and are novel fluorescent dyes. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)