反应详情

温度

50 °C

beta-Cyclodextrin (4.29 g, 3.78 mmol) was dissolved in water (75 mL) at 50° C. and a solution of 3-(2,4-dichlorophenyl)-3-oxopropanenitrile (810 mg, 3.8 mmol) in Acetone (3.80 mL) was added dropwise, followed by NBS (0.808 g, 4.54 mmol) and thiourea (0.346 g, 4.54 mmol). Reaction mixture was stirred at 50° C. 1 hr. LCMS indicated complete conversion. Reaction mixture was cooled to rt, extracted with ethyl acetate (3×50 mL), dried with MgSO4, filtered and concentrated under reduced pressure. The residue was purified by ISCO with 5-30% ethyl acetate in hexanes to give 0.43 g of the title compound (42%). LCMS; (FA) ES+, 270, 272, 1H NMR (400 MHz, d1-chloroform) δ 7.49 (d, J=1.84 Hz, 1H), 7.41 (d, J=8.30 Hz, 1H), 7.31 (dd, J=8.16, 1.74 Hz, 1H).

1. customReaction mixture
2. custom1 hr
3. customReaction mixture
4. temperaturewas cooled to rt
5. extractionextracted with ethyl acetate (3×50 mL)
6. dry with materialdried with MgSO4
7. filtrationfiltered
8. concentrationconcentrated under reduced pressure
9. customThe residue was purified by ISCO with 5-30% ethyl acetate in hexanes