A convenient method for the preparation of N, N'-disubstituted thioureas using 2-chloropyridinium salt, sodium trithiocarbonate and amines.

~89%

~89%

~93%

~84%

~91%

~93%

~0%

~0%

~90%

~95%

~0%

~78%

~77%

~0%

~87%

~96%

~92%

~93%

~62%

~99%

~63%

~99%