Trimethyl borate → 2-(Cyclohexyloxy)methylphenylboronic acid

Beteiligte Stoffe

Reaktionsschritte

31.2 ml of n-butyllithium (1.6 M) in solution in n-hexane are added dropwise at −70° C. to 13.45 g of 1-bromo-2-[(cyclohexyloxy)methyl]benzene, obtained in step 1.1, in solution in 150 ml of tetrahydrofuran. After 2 hours at −70° C., 10.2 ml of trimethyl borate are introduced dropwise and the temperature of the reaction medium is allowed to rise to −30° C. The medium is hydrolyzed with a saturated ammonium chloride solution, and then extracted with ethyl acetate and the organic phase is dried with anhydrous sodium sulfate. After evaporation, 11.7 g of a yellow oil are obtained.

Herkunft & Nachweise