Hydrochloric Acid → HCID 13732597, compound

Participants

Reaction Steps

5-Benzoyl-1-ethyl-4-isopropylideneaminooxy-1H-pyrazolo[3,4-b]pyridine (2.50 g) was refluxed for 2 hours in a mixture prepared from 100 ml of 5% hydrochloric acid and 15 ml of ethanol. The reaction mixture was then extracted into ether and washed consecutively with 5% sodium hydroxide solution and water. Evaporation of the organic phase gave 1.65 g of product. An analytical sample recrystallized from ethyl acetate/methanol had mp 151°-153° C.

Provenance & Evidence