A new type of barbiturate (a pyrimidine derivative) has been prepared through one pot synthesis from the ethanolic solution of 1,3-dichloro-4,6-dinitrobenzene, pyrimidine-2,4,6 (1H,3H,5H)-trione and N,N diethylhydroxylamine. The mechanism of the formation of the reported barbiturate involves an intermediate sigma complex formation and proton abstraction reactions. The barbiturate has been characterized spectrally through (UV–VIS, IR, 1H NMR, 13C NMR, mass) and elemental analysis. Qualitative tests have been carried out to infer the presence of nitrogen and nitro groups and also chlorine atom in the barbiturate.The anticonvulsant activity of the complex has been studied. The complex uniquely dissolve in water freely possess high LD50 (>1500 mg/kg) and extraordinarily stable.