2,5,6-trichloro-pyrimidine-4-carbonitrile 、
硫代吗啉-1-鎓-1-醇 以5.8 gm (0.02 mol) of 6-cyano-2,5-dichloro-4-(1-oxido-thiomorpholino)-pyrimidine (m.p. 145°-147°C), obtained from 6-cyano-2,4,5-trichloro-pyrimidine and thiomorpholine-1-oxide的产率得到2,5-dichloro-6-(1-oxo-1λ
4-thiomorpholin-4-yl)-pyrimidine-4-carbonitrile