反应详情

1-(2-Methyl-pyridin-4-yl)-2-phenyl-ethanone (233 mg, 1.1 mmol, solution in 5 mL DMF) was added over 15 min to a suspension of NaH (55% in mineral oil, 58 mg, 1.3 mmol) in DMF (2 mL). After 30 min, methyl iodide (0.07 mL, 1.2 mmol) was added slowly drop by drop. The mixture was poured onto ice and extracted with ethyl acetate. The combined organic layers were washed (brine), dried (Na2SO4), and the solvent was evaporated. Purification by column chromatography (silica gel, heptane:ethyl acetate=100:0-50:50) afforded the title compound (142 mg, 54%). 1H NMR (300 MHz, DMSO-D6) 8.56 (1H, d), 7.68 (1H, s), 7.61 (1H, d), 7.30-7.27 (4H, m), 7.20-7.18 (1H, m), 4.92 (1H, q), 1.40 (3H, d); MS (m/e)=226.3 [MH+].

1. additionThe mixture was poured onto ice
2. extractionextracted with ethyl acetate
3. washThe combined organic layers were washed (brine)
4. dry with materialdried (Na2SO4)
5. customthe solvent was evaporated
6. customPurification by column chromatography (silica gel, heptane:ethyl acetate=100:0-50:50)