反应详情

N-(6-Hydroxymethyl-pyridin-2-yl)-2,2-dimethyl-propionamide (1.04 g, Papadopoulou,; J. Heterocycl. Chem., 32, 1995, 675) in DMF (25 mL) was treated with sodium hydride (0.64 g, 60% suspension in oil), the mixture was then stirred for 1 h at RT, bromomethyl cyclopropane (0.688 g) was added dropwise and stirring was continued for further 1.75 h. The reaction mixture was partitioned between 2 M aqueous KHCO3 and AcOEt, the layers were separated, the aqueous layer extracted twice with AcOEt. The combined organic layers were washed with saturated aqueous NaCl and water, dried over Na2SO4, filtered and evaporated. The residue was purified by flash chromatography (heptane/AcOEt 100% to 50%) to N-(6-cyclopropylmethoxymethyl-pyridin-2-yl)-2,2-dimethyl-propionamide (0.884 g) as a yellow oil. MS (ESI): 263.2 (MH+).

1. stirringstirring
2. waitwas continued for further 1.75 h
3. customThe reaction mixture was partitioned between 2 M aqueous KHCO3 and AcOEt
4. customthe layers were separated
5. extractionthe aqueous layer extracted twice with AcOEt
6. washThe combined organic layers were washed with saturated aqueous NaCl and water
7. dry with materialdried over Na2SO4
8. filtrationfiltered
9. customevaporated
10. customThe residue was purified by flash chromatography (heptane/AcOEt 100% to 50%) to N-(6-cyclopropylmethoxymethyl-pyridin-2-yl)-2,2-dimethyl-propionamide (0.884 g) as a yellow oil