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1-bromo-4-chloro-2-(2,2-difluoroethoxy)benzene[ No CAS ]
Yield
Reaction Conditions
Operation in experiment
315 mg
With potassium carbonate; In N,N-dimethyl-formamide; at 95℃; for 3h;
To a DMF solution (5 mL) of <strong>[13659-23-9]2-bromo-5-chlorophenol</strong> (244mg), potassium carbonate (325 mg) and 2,2-difluoroethyl4-methylbenzenesulfonate (320 mg) were added, and the reaction solution was stirred for 3 hours at 95 C. Thereaction solution was added to an aqueous sodium hydroxide solution (1 M, 20 mL) and extracted with toluene / ethylacetate = 1/1 (20 mL). The organic layer was washed with saturated saline (20 mL), dried over anhydrous sodium sulfate,and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluent: hexane/ ethyl acetate) to obtain 1-bromo-4-chloro-2-(2,2-difluoroethoxy)benzene (315 mg).