A sequential intramolecular-intermolecular enantioselective alkene difunctionalization reaction has been developed which is thought to proceed through Pd-catalyzed quinone methide formation. The synthesis of new chiral heterocyclic compounds with adjacent chiral centers is achieved in enantiomeric ratios up to 99:1 and diastereomeric ratios up to 10:1.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2792916PMC
http://dx.doi.org/10.1021/ja909030cDOI Listing

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