Hydrogen Sulfide → HCID 178514163, compound

Participants

Reaction Conditions

Reaction Steps

Hydrogen sulphide is first passed into a solution of 190 g (1.53 mols) of 2-(N-cyanimino)-hexahydropyrimidine (a) in 760 ml of water at 75° C. for 12 hours; and then at 65°-70° C. for another 25-30 hours. (On the second day, some of the precipitate no longer dissolves). The suspension is then warmed to 45° C. and 46 ml of 40% strength NaOH are added. Stirring is continued for 30 minutes and the residue is ground and filtered off with suction. After drying, 228 g (94%) of product are obtained. Melting point=187°-189° C. (decomposition).

Provenance & Evidence