反应详情

In 300 ml of toluene and 200 ml of 30% potassium hydroxide were combined 8.00 g of 9-amino-3,4-dihydroacridin-1(2H)-one and 3.20 g of tetrabutylammonium hydrogen sulfate. The biphasic mixture was mechanically stirred and warmed to reflux (90° C.) and 30.0 g of 2-trifluoromethylbenzyl bromide in 50 ml of toluene was added dropwise over 1 hour. After the addition, heating was maintained for 2 hours during which the reaction went to completion. It was poured into 500 ml of ice and the layers were separated. The aqueous phase was extracted with DCM. The organic solutions were combined, washed with saturated brine, dried over anhydrous magnesium sulfate, filtered, and evaporated to an oil which was purified by preparative HPLC (ethyl acetate). The product-containing fractions were evaporated to a solid which was recrystallized from 1:1 ethyl acetate/hexanes to yield 6.49 g of solid, mp 167° C.

1. temperaturewarmed
2. additionwas added dropwise over 1 hour
3. additionAfter the addition
4. temperatureheating
5. temperaturewas maintained for 2 hours during which the reaction
6. customthe layers were separated
7. extractionThe aqueous phase was extracted with DCM
8. washwashed with saturated brine
9. dry with materialdried over anhydrous magnesium sulfate
10. filtrationfiltered
11. customevaporated to an oil which
12. customwas purified by preparative HPLC (ethyl acetate)
13. customThe product-containing fractions were evaporated to a solid which
14. customwas recrystallized from 1:1 ethyl acetate/hexanes