“…C, , N, Cl. Ethyl 3-(p-Chlorophenyl)-5,6-dihydro-5-oxo-as-triazine-6-carboxylate ( 7). This procedure is described by Taylor and Notes Martin.28 An ethanolic solution of diethyl 2-ketomalonate (1.75 g, 0.01 mol) and p-chlorobenzamidrazone (1.7 g, 0.01 mol) was stirred at room temperature for 18 h. The filtered reaction was evaporated and the residue crystallized from 2-propanol to give 0.9 g (32%): mp 247-250 °C (lit.28 mp 244 °C); NMR (Me2SO-d6-CDCl3) & 8.17 (d, 2,J=10 Hz), 7.52 (d, 2, J = 10 Hz), 4.45 (q, 2, =7 = 8 Hz), 1.40 (t, 3, J = 8 Hz).…”