Heterocyclization of N,N′-disubstituted p-phenylenediamines with cyclich β-diketones and formaldehyde. Synthesis of new pyrido[2,3-g]quinoline derivatives
摘要:
Three-component condensation of N,N'-dibenzyl-p-phenylenediamines with cyclic beta-diketones and formaldehyde under mild conditions resulted in selective formation of a series of new dispiro derivatives of pyrido[2,3-g]quinoline.