反应详情

温度

50 °C

NaH (285 mg, 7.12 mmol) was added portionwise to a stirred solution of 2-tert-butyldimethylsilyloxymethyl-6-(1-hydroxy-1-methylethyl)pyridine (2.0 g, 7.12 mmol) in DMF (30 mL) at room temperature. After 20 min, methyl iodide (1.33 mL, 21.4 mmol) was added, the mixture was warmed to 50° C. and stirred for 16 h at this temperature. The mixture was poured onto water, extracted with EtOAc (×3), the combined extracts were dried (MgSO4), filtered evaporated and the residue purified by column chromatography (20:1 to 10:1, isohexane:EtOAc) to give the title compound (1.20 g, 57%) as a colorless oil; NMR δH (400 MHz, CDCl3) 7.69-7.65 (1H, m), 7.38-7.34 (2H, m), 4.81 (2H, s), 3.15 (3H, s), 1.53 (6H, s), 0.96 (9H, s), 0.12 (6H, s).

1. additionThe mixture was poured onto water
2. extractionextracted with EtOAc (×3)
3. dry with materialthe combined extracts were dried (MgSO4)
4. filtrationfiltered
5. customevaporated
6. customthe residue purified by column chromatography (20:1 to 10:1, isohexane:EtOAc)