Functionalised bicyclic alcohols by enantioselective α-deprotonation–rearrangement of meso-epoxides†

Abstract
Enantioselective α-deprotonation–rearrangement of achiral substituted cyclooctene oxides 7, 27 and 28 and N-Boc hexahydroazonine oxide 45 using organolithiums in the presence of (−)-sparteine 3 or (−)-α-isosparteine 4 gives the functionalised bicyclo[3.3.0]octan-2-ols 9, 29, and 32 and indolizinol 47 in 50–72% yields and 83–89% ees.

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