1,4-Dioxane hydrochloride → HCID 178469450, compound

Participants

Reaction Steps

4 N Hydrochloric acid/1,4-dioxane (2 ml) was added to the diethyl 2-(5-benzyloxycarbonylamino-3-methylpyrazol-1-ylmethylene)m alonate (100 mg) obtained above and stirred for 22 hours. Precipitated crystals were collected by filtration and dried under reduced pressure to give ethyl 5-hydroxy-2-methylpyrazolo[1,5-a]pyrimidine-6-carboxylate (40 mg, Y.:73%).

Provenance & Evidence