反应详情

To a solution of 4-chloro-2-(trifluoromethyl)quinazoline (2.0 g, 8.6 mmol) and hydrazine (0.27 mL, 8.6 mmol) in 20 mL of tetrahydrofuran was added 1.8 g (13 mmol) of potassium carbonate. The resultant suspension was stirred at ambient temperature for 2 hours. The reaction mixture was partitioned between ethyl acetate and water. The aqueous layer was extracted with ethyl acetate and the combined organics were dried over magnesium sulfate. After filtration, the organics were concentrated in vacuo to yield a yellow solid that was recrystallized in ethyl acetate:hexanes. 1.1 g (56%) of yellow needle-like crystals were isolated.

1. customThe reaction mixture was partitioned between ethyl acetate and water
2. extractionThe aqueous layer was extracted with ethyl acetate
3. dry with materialthe combined organics were dried over magnesium sulfate
4. filtrationAfter filtration
5. concentrationthe organics were concentrated in vacuo
6. customto yield a yellow solid
7. customthat was recrystallized in ethyl acetate