Acetic Acid → HCID 178514959, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 3-amino-1H-pyrazol-5-ol (10.00 g, 101 mmol) in THF (300 mL) at RT was added phthalic acid anhydride (14.9 g, 101 mmol) followed by acetic acid (69.3 ml, 1.21 mol). The mixture was heated to reflux. After 4 days, the mixture was concentrated in vacuo to afford a slurry that was cooled to 0° C. and filtered. The solid was rinsed with Et2O and dried in vacuo to afford 2-(5-hydroxy-1H-pyrazol-3-yl)isoindoline-1,3-dione as a yellow solid that was advanced without further purification. MS: Found M+H+=230.2.

Provenance & Evidence