Acetic Anhydride → HCID 131717712, compound

Participants

Reaction Steps

A mixture of 2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)-3,4-(methylenedioxy) benzoic acid (4.11 g, 13.5 mmol) and acetic anhydride (100 mL, 1.06 mol) is stirred overnight at reflux temperature and concentrated in vacuo to give a residue which is chased twice with toluene to give a pale yellow solid. Recrystallization from ethyl acetate affords the title product as a pale yellow solid, 2.77 g (69.9%), mp 158°-160° C., identified by NMR spectral analysis.

Provenance & Evidence