反应详情

To a solution of 2-(2-(2-methoxyethyl)aminoanilin-5-yl)benzoxazole (see Working Example 51-1) (98 mg, 0.346 mmol) in dimethylformamide (2 mL) was added an aqueous solution of acetaldehyde (approx. 90%, 65.1 μL, 1.66 mmol) and oxone (213 mg, 0.346 mmol), and this was stirred at room temperature for 3 hours. After the reaction was complete, aqueous potassium carbonate solution was added, this was filtered and washed with water. The crystals obtained were purified by silica gel column chromatography to yield the title compound (41.4 mg, 39% yield) as light brown crystals.

1. filtrationthis was filtered
2. washwashed with water
3. customThe crystals obtained
4. customwere purified by silica gel column chromatography