反应详情

A solution of 0.09 moles of 2,6-dimethyl-aniline in 35 ml of tetrahydrofuran was added to 200 ml of 20% (w/v) aqueous potassium carbonate contained in a one liter flask. A solution of 20 g of p-nitrobenzoyl chloride in 35 ml of tetrahydrofuran was added dropwise. The resulting mixture was refluxed for 12 hours while the pH was maintained at or above pH 8. The solution was cooled to room temperature and extracted three times, each with 100 ml of chloroform. The extracts were combined, dried over magnesium sulfate, and evaporated in vacuo. The resulting residue was crystallized from petroleum ether/benzene affording 15 g of the desired subtitle intermediate, m.p. 192-194.

1. customcontained in a one liter flask
2. temperatureThe resulting mixture was refluxed for 12 hours while the pH
3. temperaturewas maintained at or above pH 8
4. extractionextracted three times
5. dry with materialdried over magnesium sulfate
6. customevaporated in vacuo
7. customThe resulting residue was crystallized from petroleum ether/benzene affording 15 g of the desired subtitle intermediate, m.p. 192-194