Pinacol → 2-[4-(3-Bromopropoxy)phenyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane

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Reaction Steps

To a solution of 4-(3-bromopropoxy)phenylboronic acid (1.0 g, 3.9 mmol) in diethyl ether (40 mL) was added pinacol (1.4 g, 12 mmol) and the reaction mixture was stirred for 18 h and concentrated to afford the desired product (1.5 g, crude) as a light brown oil which carried onto the next step without further purification: ESI MS m/z 247 [C15H22BBrO3−94]+.

Provenance & Evidence