Heterocycles containing nitrogen and sulfur elements have lots of applications in wide areas including pesticide, pharmaceutical and so on. They have attracted people's attention. Consequently, exporing a novel way to synthesize new heterocycles has a good value of research. The thesis has studied the synthesis of new 2-thio-4-pyrimidinones.The thesis consists of three chapters.In chapter one, we mainly made a review of the progress about the synthesis and applications of 2-thio-4-pyrimidinones in recent ye...