反应详情

温度

0 °C

Potassium tert-butoxide (354 mg, 3.2 mmol) was added in one portion to a stirred solution of 2-((tert-butyldimethylsilyl)oxy)ethan-1-ol (506 mg, 2.9 mmol) in THF (3 mL) at 0° C. under nitrogen. The mixture was stirred at 0° C. for 30 min then 3-chloro-4-fluoronitrobenzene (251 mg, 1.4 mmol) was added in one portion (reaction turned dark color). The mixture was stirred at 0° C. for 10 min then the ice-bath removed, the reaction was allowed to warm to room temperature (10 min) and stirred for 1 hr. The solvent was removed under vacuum and the residue partitioned between EtOAc (50 mL) and H2O (50 mL). The aqueous layer was extracted with EtOAc (2×50 mL) and the combined organic layers dried (Na2SO4), filtered and the solvent removed under vacuum to leave the product as an oil (yield assumed quantitative=475 mg). The product was used in the next step without further purification.

1. stirringThe mixture was stirred at 0° C. for 10 min
2. customthe ice-bath removed
3. temperatureto warm to room temperature (10 min)
4. stirringstirred for 1 hr
5. customThe solvent was removed under vacuum
6. customthe residue partitioned between EtOAc (50 mL) and H2O (50 mL)
7. extractionThe aqueous layer was extracted with EtOAc (2×50 mL)
8. dry with materialthe combined organic layers dried (Na2SO4)
9. filtrationfiltered
10. customthe solvent removed under vacuum