Low-valent titanium reagent-promoted intramolecular reductive coupling reactions of ketomalononitriles: A facile synthesis of benzo[4,5]indene, acridine and quinoline derivatives

摘要

The intramolecular reductive coupling reactions of ketomalononitriles induced by a low-valent titanium reagent were studied. Benzo[4,5]indene, acridine and quinoline derivatives are prepared in good yields under neutral and mild conditions.