反应详情

2.05 g (7.59 mmol) of 2′-acetyl-2-bromo-N-methylacetanilide and 2 g (30.77 mmol) of sodium azide were stirred in 20 ml of dimethylformamide at room temperature for 4 hours. The resulting mixture was diluted with water and extracted with diethyl ether. The organic phase was washed twice with water, dried over magnesium sulphate, evaporated to dryness and the residue chromatographed on silica gel using ethyl acetate/petrol 5:3 for the elution. There was obtained 910 mg of 2′-acetyl-2-azido-N-methylacetanilide as a colorless gum. MS: m/e 233 [M+H]+.

1. extractionextracted with diethyl ether
2. washThe organic phase was washed twice with water
3. dry with materialdried over magnesium sulphate
4. customevaporated to dryness
5. customthe residue chromatographed on silica gel
6. washfor the elution