反应详情

温度

-60 °C

To the solution of 3,5-diisopropylbromobenzene (5.76 g, 23.9 mmol) and tetramethylethylenediamine (3.6 mL, 23.9 mmol) in diethyl ether (30 mL), solution of n-butyllithium in n-hexane (14.5 mL, 23.9 mmol) was dropped at −60° C. Reaction solution was stirred for 1.5 hours at −60° C., and further was stirred for 30 minutes at 0° C., then, solution of triisopropyl borate (6.6 mL) in diethyl ether (5 mL) was dropped at −60° C. Reaction solution was stirred for 30 minutes at −60° C., and further, was stirred overnight at room temperature, then, diluted hydrochloric acid (50 mL) was added. Resulting solid part was filtered to obtain the crude product of 3,5-diisopropylphenylboronic acid (5.9 g).

1. customReaction solution
2. stirringfurther was stirred for 30 minutes at 0° C.
3. customReaction solution
4. stirringwas stirred for 30 minutes at −60° C.
5. stirringfurther, was stirred overnight at room temperature
6. customResulting solid part
7. filtrationwas filtered