反应详情

7-Benzyloxy-6-bromo-2-methyl-quinolin-4-ol (25.0 g, 72.6 mmol) and phosphorous oxychloride (70 mL, 0.764 mol) were heated 40 min at 130° C. and then cooled down to room temperature. Phosphorous oxychloride was evaporated under high vacuum. Ice water was added and the pH of this solution was adjusted to 9 with ammonium hydroxide. The suspension was extracted with dichloromethane. The combined organic layers were dried under vacuum. 22.8 g of the title compound were obtained. Brown solid, ISP-MS: m/e=364.0 ([M+H]+).

1. customPhosphorous oxychloride was evaporated under high vacuum
2. additionIce water was added
3. extractionThe suspension was extracted with dichloromethane
4. customThe combined organic layers were dried under vacuum