3,5-Disubstituted 1,2,4-thiadiazoles 2 were prepared by reaction of thioamides 1 with DMSO in the presence of such an electrophilic reagent as 1-methyl-2-chloropyridinium iodide, benzoyl chloride, acetyl chloride, hydrochloric acid, or trimethylsilyl chloride in organic solvents at room temperature in high yields. Thiadiazoles 2 were also obtained by reaction of 1 with NBS at room temperature in high
3,5-二取代的
1,2,4-噻二唑 2 是通过
硫代酰胺 1 与
DMSO 在诸如 1-甲基-2-
氯吡啶鎓
碘化物、
苯甲酰氯、
乙酰氯、
盐酸或室温下在有机溶剂中以高收率制备三
甲基氯硅烷。
噻二唑 2 也通过 1 与
NBS 在室温下以高产率反应获得。
硫代酰胺 S-氧化物在室温下与亲电试剂反应,以高产率得到相应的
噻二唑 2。