Urea → N-(3-Hydroxy-2,6-dimethylphenyl)acetamide

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To a solution of N-(3-amino-2,6-dimethyl-phenyl)acetamide (2 g, 11 mmol, 1.1 eq) in a mixture of H2SO4 (10 mL) and H2O (70 mL) at 0° C. was added a solution of NaNO2 (1 g, 14.6 mmol, 1.3 eq) in H2O (140 mL). The solution was stirred at 0° C. for 30 min then urea (425 mg, 7.1 mmol, 0.63 eq) was added. The reaction was poured into boiling water and the mixture stirred at 100° C. for 2 h. The aqueous phase was extracted with EtOAc, and the combined extracts were dried (Na2SO4), filtered and evaporated in vacuo. The residue was purified by column chromatography (MeOH:DCM, 0:1 to 1:20) to give the title compound as a white solid (800 mg, 40%).

Herkunft & Nachweise