Abstract: The use of malonates such as diethyl malonates 9,(chlorocarbonyl) ketenes 15 and bis (2, 4, 6-trichlorophenyl) malonates 18 as reagents for cyclocondensation with 1, 3- dinucleophiles to give six-membered heterocycles is described. Further attempts to use malonates such as bis (trimethylsilyl) malonates 19 and bis (carbamimidoyl) malonates 29 as new cyclocondensation agents are described.
