反应详情

An N,N-dimethylformamide (8 ml) solution of N-methyl-N-methyloxy-2-benzyloxycarbonylamino-5-hydroxybenzamide (0.8 g), methyl iodide (0.2 g) and potassium carbonate (0.5 g) was stirred for 3 hours at 60° C. The reaction mixture was poured into ice-water, which was subjected to extraction with ethyl acetate. The organic layer was washed with water, which was dried over anhydrous sodium sulfate. The solvent was distilled off, and the residue was purified by means of a silica gel column chromatography to give N-methyl-N-methyloxy 2-benzyloxycarbonylamino-5-methyloxy-benzamide as a yellow oily product (0.55 g).

1. extractionwas subjected to extraction with ethyl acetate
2. washThe organic layer was washed with water, which
3. dry with materialwas dried over anhydrous sodium sulfate
4. distillationThe solvent was distilled off
5. customthe residue was purified by means of a silica gel column chromatography