Question: Equations 5 .24a

Equations 5 .24a<, show the formation of trialkylboranes from alkenes and BHr. The reactions of BH, with 2-methyl-2-butene and 2,3-dim ethyl-2-butene, however, do not give trialkylboranes, even with a large excess of alkene present. Suggest a reason why the reactions of these alkenes with BH, do not give trialkylboranes.

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