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Well B-haved! Boronyl groups are fully compatible in the copper-catalyzed asymmetric alkylation with chiral phosphoramidites to afford acyclic α-substituted allylic boronate reagents (see scheme, CuTC=copper(I) thiophene-2-carboxylate). This represents the first highly enantioselective catalytic approach to these boronate compounds, which are useful reagents in synthesis.
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Carosi et al. (2007) studied this question.
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