An organocatalytic asymmetric formal [3 + 2] cycloaddition of enynones with N-hydroxylamines has been described. A newly designed multifunctional organocatalyst was found to be highly effective, and the method allowed the synthesis of a variety of 2,3-dihydroisoxazoles in good yields with excellent enantioselectivity.
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http://dx.doi.org/10.1021/acs.orglett.6b01737 | DOI Listing |
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