Methyl iodide → Benzenepropanoic acid, 4-hydroxy-, methyl ester

Participants

Reaction Steps

To a 1000 mL RB flask fitted with magnetic stirrer was charged 250 mL of DMF, 3-(4-Hydroxy-phenyl)-propanoic acid (25.0 g, 150.43 mmol) and K2CO3 (41.58 g, 300.87 mmol). The resulting mixture was stirred at RT for 30 minutes. Methyl Iodide (25.627 g, 180.51 mmol) was added to the resulting mixture which was precooled to 0° C. The resulting mixture was stirred at RT for 3 h. After completion of the reaction (reaction monitored by TLC), the solvent was removed under reduced pressure and the crude mass was dissolved in ethyl acetate (250 mL). The organic layer was washed with water (250 mL), saturated sodium bicarbonate solution (250 mL×2), and saturated brine solution (250 mL). The organic layer was dried over anhydrous Na2SO4 and the solvent was removed under reduced pressure. The product was obtained as yellow color oil (26 g, Yield: 95.9%): MS (ESI, 120 eV): m/z=178.9 (M−H)+; 1H NMR (300 MHz, CDCl3): δ 6.97-7.00 (d, 2H), 6.66-6.69 (d, 2H), 4.94 (s, 1H), 3.59 (s, 3H), 2.78-2.83 (t, 2H), 2.50-2.55 (t, 2H).

Provenance & Evidence