HCID 20242528, compound → HCID 54462082, compound

Participants

Reaction Steps

Five grams of 2-isopropyl-3-(1-hydroxypropyl)pyrazolo[1,5-a]pyridine (Example 8) were dissolved in 50 ml of acetic anhydride. The mixture was heated to reflux for 4 hours and concentrated to dryness. Water was added to the residue. The mixture was brought to alkaline by the addition of potassium carbonate and extracted with dichloromethane. The organic layer was dried over anhydrous sodium sulfate and concentrated to dryness. The residue was subjected to silica gel column chromatography, eluted with ethyl acetate-benzene (1:4) to give 3.6 g of the desired compound as pale yellow oil.

Provenance & Evidence