No fancy catalyst required: The copper-catalyzed enantioselective conjugate allylation of activated cyclic enones affords products in up to >98 % ee. Reactions proceed to high conversion in the presence of commercially available Cu(OTf)2 and bis(oxazoline) ligand 1. The allylated products are useful precursors for the synthesis of chiral building blocks.
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Shizuka et al. (2008) studied this question.
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