Condensation of 2-amino-5-bromopyridine (I) with 1,1-thiocarbonyl diimidazole (II) furnished the thiocarbonyl derivative (III). Further reaction of (III) with 1-(2-aminoethyl)piperidine (IV) gave the target thiourea.
Condensation of 2-amino-5-bromopyridine (I) with 1,1-thiocarbonyl diimidazole (II) furnished the thiocarbonyl derivative (III). Further reaction of (III) with 1-(2-aminoethyl)piperazine (IV) gave the target thiourea.