Water → 5-(2,4-Dinitrophenylthio)-1-(2-ureidoethyl)tetrazole

Participants

Reaction Steps

To a solution of 0.84 g. (0.010 mol.) of sodium bicarbonate and 0.81 g. (0.010 mol.) of potassium cyanate in 35 ml. of water containing 2.5 ml. of glacial acetic acid was added 3.15 g. (0.010 mol.) of 1-(2-aminoethyl)-5-(2,4-dinitrophenylthio)tetrazole hydrochloride. The mixture was refluxed for 2.5 hours, then it was filtered and the solid product was washed with water and recrystallized from methanol-acetone to give 5-(2,4-dinitrophenylthio)-1-(2-ureidoethyl)tetrazole, m.p. 190°-191° (d).

Provenance & Evidence