Suzuki-aza-Wittig, Suzuki-condensation and aza-Wittig-electrocyclic ring-closure tandem reactions for synthesis of fused nitrogen-containing ring systems
We describe tandem combinations of Suzuki-aza-Wittig, Suzuki-condensation and aza-Wittigelectrocyclic ring closure reactions for the synthesis of new pyridazino[4,5-c]isoquinolinone, pyridazino[4,5-c]quinolinone and pyrimido[5,4-c]quinoline derivatives.