反应详情

A mixture of 2-(2,2-dimethoxyethyl)nicotinonitrile (7 g, 36.42 mmol), aqueous Na2CO3 (3 N, 145 mL), H2O2 (15%, 145 mL) in acetone (73 mL) was stirred at room temperature for 14 h. After removal of acetone, the residue was diluted with water and extracted with DCM (3×100 mL). The combined organic layers were washed with brine (100 mL), dried over anhydrous Na2SO4, filtered, and concentrated under reduced pressure to give the crude product. The crude product was purified by silica gel column chromatography (eluting with PE/EtOAc v/v 1:1 and with EtOAc) to yield 2-(2,2-dimethoxyethyl)nicotinamide as a solid (6 g, yield 78%). ESI MS: m/z 211 [M+H]+, 233 [M+Na]+.

1. customAfter removal of acetone
2. additionthe residue was diluted with water
3. extractionextracted with DCM (3×100 mL)
4. washThe combined organic layers were washed with brine (100 mL)
5. dry with materialdried over anhydrous Na2SO4
6. filtrationfiltered
7. concentrationconcentrated under reduced pressure
8. customto give the crude product
9. customThe crude product was purified by silica gel column chromatography (
10. washeluting with PE/EtOAc v/v 1:1 and with EtOAc)