1,3-Dibromopropane → Ethyl 1-(4-nitro-3-(2,2,2-trifluoroethoxy)phenyl)cyclobutanecarboxylate

Participants

Reaction Conditions

Reaction Steps

Ethyl 2-(4-nitro-3-(2,2,2-trifluoroethoxy)phenyl)acetate (3 g, 9.7 mmol) was dissolved in 50 mL anhydrous DMF, NaH (60% wt. in oil, 0.514 g, 10.7 mmol) was added at 0° C. The reaction mixture was stirred for 0.5 h at 25° C. and 1,3-dibromopropane (1.03 mL, 9.7 mmol) was added drop wise at 0° C. The reaction mixture was stirred at 0° C. for 1 h and saturated NH4Cl solution (10 mL) was added. The reaction mixture was extracted with EtOAc (3×20 mL) and the combined organic phases were washed with water (3×20 mL) and brine (20 mL), dried over MgSO4, filtered and concentrated under reduced pressure to give ethyl 1-(4-nitro-3-(2,2,2-trifluoroethoxy)phenyl)cyclobutanecarboxylate (900 mg) as a colorless oil.

Provenance & Evidence