The title compoands were synthesized directly from β-diketone or β-ketone ester, carbon disulfide, and 2-bromoethanol with potassium carbonate as base in one pot reactio
以碳酸钾为碱，β－二酮或β－酮酯和二硫化碳、溴乙醇反应，用简单的方法合成了标题化合
