反应详情

A solution of 3.9 g (0.01 mol) of 4,5-dihydro-5-[3-[(2-quinolinyl)methoxy]phenyl]-2-(2-pyridyl)-1,3-oxazole in 100 ml of acetonitrile, 10 ml of water, and 1 ml of concentrated hydrochloric acid is heated on a steam bath for 5 hours. The solvents are evaporated and the residue is dissolved in a mixture of aqueous sodium bicarbonate and ethyl acetate. The ethyl acetate solution is separated and washed with dilute aqueous sodium chloride solution. The ethyl acetate solution is dried over anhydrous magnesium sulfate, filtered, and evaporated. The residue is dissolved in hot ethyl acetate and the solution is distilled with hexane to obtain crystals (2.2 g), m.p. 126°-129° C.

1. customThe solvents are evaporated
2. dissolutionthe residue is dissolved in a mixture of aqueous sodium bicarbonate and ethyl acetate
3. customThe ethyl acetate solution is separated
4. washwashed with dilute aqueous sodium chloride solution
5. dry with materialThe ethyl acetate solution is dried over anhydrous magnesium sulfate
6. filtrationfiltered
7. customevaporated
8. dissolutionThe residue is dissolved in hot ethyl acetate
9. distillationthe solution is distilled with hexane