Abstract Several 1-aryl-3-(2-pyrimidyl) thiocarbamides and their corresponding cyclized 2- arylimino-3-(2-pyrimidyl) thiazolid-4-ones were synthesized and characterized by their sharp melting points and elemental analyses. These thiocarbamides and thiazolidones possessed anticonvulsant activity against pentylenetetrazol-induced convulsions and potentiated pentobarbital-induced hypnosis in mice. Most of these thiocarbamides and thiazolidones ...