Abstract
AbstractCarbolithiation of (1-phenylvinyl)boronic acid pinacol ester with tert-butyllithium was used to generate α-phenylboryl carbanions that reacted in a straightforward manner with carbonyl groups through a boron–Wittig sequence. When unhindered α,β-unsaturated carbonyl compounds were used, 1,4-addition of the α-phenylboryl carbanions was observed over the boron–Wittig sequence.
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