Hydrochloric Acid → HCID 23152918, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 2-[2-(2-bromophenyl)ethoxy]tetrahydropyran (3.58 g, 12.5 mmol) and triisopropyl borate (3.70 ml, 16.1 mmol) in tetrahydrofuran (10.0 ml) was added a solution (10.0 ml) of 1.6M n-butyllithium in hexane at −78° C., and the mixture was stirred for 2 hr while gradually raising the temperature to 0° C. 1N hydrochloric acid was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine and dried over anhydrous sodium sulfate. After filtration, the solvent was evaporated under reduced pressure, and the residue was purified by silica gel chromatography (hexane:ethyl acetate=3:1-2:1) to give 2-[2-(tetrahydropyran-2-yloxy)ethyl]phenylboronic acid (1.77 g, yield 56.6%).

Provenance & Evidence