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The cyclization of (8‐oxo‐2‐octenyl)boronates having methyl substituents in the chain linking the two functional groups proceeds with complete simple diastereoselectivity and with induced diastereoselectivity of 85 to > 98% to give methylsubstituted 2‐vinylcyclohexanols.
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Hoffmann et al. (1993) studied this question.
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