Réaction hétéro-Diels–Alder: addition des azostyrènes sur les dérivés 2-hydroxyméthylène indanones

Abstract Hetero-Diels–Alder reactions of 2-hydroxymethylene indanone derivatives to hydrazone α-halogenocetones are described. The stereospecificity and regiospecificity of the reactions are discussed. New fused indanone-spiro-pyridazine structures are reported.