A new approach to the synthesis of fused heterocyclic compounds. [2+4]-Cycloaddition of 2-heteroarylcyclohexane-1,3-diones to Schiff bases

A new approach to the synthesis of fused nitrogen-containing heterocyclic compounds has been developed, involving cyclocondensation of Schiff bases or their synthetic precursors with 2-heteroarylcyclohexane-1,3-diones.