Hydrochloric Acid → HCID 19419825, compound

Participants

Reaction Steps

8-Chloro-5-methoxy-1,2,4-triazolo[4,3-c]pyrimidine-3(2H)-thione (0.215 g, 1.00 mmol) was mixed with 2.0 g of dry methanol and to this mixture was added, in increments with stirring at ambient temperature, 0.26 g (1.2 mmol) of commercial 25 percent sodium methoxide in methanol. After a 35-min reaction period, the mixture was acidified with aqueous hydrochloric acid and diluted with water. The precipitate that formed was recovered by filtration and dried to obtain 0.168 g of the title compound in 97 percent purity as determined by HPLC (76 percent of theory) as a cream colored solid. The compound can be recrystallized from a mixture of methanol and water; it decomposes, but does not melt up to 250° C.

Provenance & Evidence