反应详情

To a suspension of 4-(2,3-dimethyl-4-nitrophenoxy)pyridin-2-amine (110 mg, 0.424 mmol) in THF (3.0 mL) containing DIPEA (370 μL, 2.12 mmol) at 0° C. was added 2-methoxyacetyl chloride (155 μL, 1.70 mmol) in a single portion. The reaction mixture was warmed to RT for 1 hr and a solution of NH3 in MeOH (7M, 2.0 mL) was added and the resulting mixture maintained at RT for 16 hr and then evaporated in vacuo. The residue was partitioned between DCM (50 mL) and brine (40 mL) and the organic phase was seprated and dried (MgSO4) and was evaporated in vacuo. The residue was purified by flash column chromatography (SiO2, 40 g, 20-50% EtOAc in isohexane, gradient elution) to afford N-(4-(2,3-dimethyl-4-nitrophenoxy)pyridin-2-yl)-2-methoxyacetamide (94 mg, 67%) as an orange oil; Rt 2.14 min (Method 2); m/z 332 (M+H)+ (ES+).

1. temperaturethe resulting mixture maintained at RT for 16 hr
2. customevaporated in vacuo
3. customThe residue was partitioned between DCM (50 mL) and brine (40 mL)
4. dry with materialdried (MgSO4)
5. customwas evaporated in vacuo
6. customThe residue was purified by flash column chromatography (SiO2, 40 g, 20-50% EtOAc in isohexane, gradient elution)