Enaminones are widely employed in the synthesis of heterocycles, however he
terocyclic enaminones and their use in the synthesis of more complex system
s have been less studied. The reaction between 4-chloroacetylacetate and al
iphatic or aromatic 1,2-aminoalcohols, 1,2-aminothiols or 1,2-diamines, yie
lds in one pot a six-membered 1,4-heterocyclic system containing the enamin
one moiety.