The first reported examples of kinetic resolution in epoxidation reactions using iminium salt catalysis are described, providing up to 99% ee in the epoxidation of racemic cis-chromenes.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3817536PMC
http://dx.doi.org/10.1021/jo401345mDOI Listing

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