Triisopropyl borate → Boronic acid, (1-methylpropyl)-, bis(1-methylethyl) ester

Participants

Reaction Conditions

Reaction Steps

Following the method of Example 1, reaction of sec-butyllithium (208 mL, 250 mmol) and triisopropoxyborane (47.0 mL, 250 mmol), with solvents removed at 0° C. and 15 mm Hg and oil bath temperature maintained at 50° C., yielded sec-butyldiisopropoxyborane, 42.0 g (206 mmol, 90%), bp 138°-140° C. (754 mm Hg); proton NMR (neat) δ 4.35 (septet, J=18 Hz, 2H), 1.09 (d, J=18 Hz, 12H), 0.8 (bm, 9H); boron NMR (neat)δ+79.5 ppm (s).

Provenance & Evidence