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To a stirred solution of methyl 2-(3-chloro-4-cyanophenyl)acetate (931 mg, 4.441 mmol) in dimethylformamide were added 60% sodium hydride (178 mg, 4.441 mmol) and iodomethane (0.3 mL, 4.441 mmol) at 0° C. The reaction mixture was stirred for 1 h at 0° C., then diluted with water. The residue dissolved in ethyl acetate and washed with water and brine. The organic layer was dried over magnesium sulfate and filtered. The filtrate removed in vacuo. The crude was purified by column chromatography to give methyl 2-(3-chloro-4-cyanophenyl)propanoate (642 mg, 65%).

1. washwashed with water and brine
2. dry with materialThe organic layer was dried over magnesium sulfate
3. filtrationfiltered
4. customThe filtrate removed in vacuo
5. customThe crude was purified by column chromatography