Methyl iodide → 2-(2-Chloro-5-methoxy-phenyl)-propionic acid methyl ester

Participants

Reaction Conditions

Reaction Steps

2-Chloro-5-methoxy-benzeneacetic acid methyl ester (994 mg) was dissolved in THF and cooled to −78° C. Lithiumdiisopropylamide (2M in THF, 3.72 mL) was added drop wise and stirring was continued for 30 minutes. Iodomethane (879 mg, 0.39 mL) was added and stirring was continued for 30 minutes. The cooling bath was removed and the reaction was allowed to warm for 45 minutes. The mixture was poured into water and extracted with ethyl acetate. The organic extract was washed with brine, dried over Na2SO4 and evaporated. The residue was purified by flash chromatography (silica gel, ethyl acetate:heptane 1:3) to give the desired compound as a yellow oil (859 mg). 1H-NMR, (CDCl3): 7.27 (d, 1H), 6.85 (d, 1H), 6.74 (dd, 1H), 4.17 (q, 1H), 3.78 (s, 3H), 3.69 (s, 3H), 1.48 (d, 3H).

Provenance & Evidence