... 3-5]. ß-Enamino ketones and esters have found application as 1,3-bielectrophilic synthons in the syntheses of hetero- cycles [6,7]; different types of heterocycles may be ... Каю, M. Hon and H. Fujimura, J. Med. ... [2] AR Katritzky, Handbook of Heterocyclic Chemistry, Pergamon Press ...