Hydrochloric Acid → HCID 67398626, compound

Participants

Reaction Conditions

Reaction Steps

Under nitrogen atmosphere, n-butyllithium (1.6 mol/L-n-hexane, 18.8 mL) was added dropwise at −78° C. to a solution of n-hexane (11 mL) and tetrahydrofuran (30 mL). Then, a solution of 1-bromo-4-chloro-2-fluorobenzene (5.24 g) in n-hexane (15 mL) and tetrahydrofuran (15 mL) was added dropwise. The mixture was stirred at −78° C. for one hour, boric acid trimethyl ester (4.0 mL) in tetrahydrofuran (15 mL) was added dropwise. The mixture was raised to room temperature. After 2 hr, aqueous hydrochloric acid solution (3 mol/L, 120 mL) was added, and the mixture was extracted with diethyl ether (100 mL). The aqueous layer was extracted again with diethyl ether (100 mL), and the combined organic layers were dried over magnesium sulfate. The solvent was evaporated under reduced pressure, n-hexane was added to the residue, and the precipitated solid was collected by filtration to give the title compound (2.0 g) as a white solid.

Provenance & Evidence