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The asymmetric construction of vicinal quaternary carbon stereocenters with at least one moiety in acyclic systems is a formidable challenge. We disclose a solution involving diastereo‐ and enantioselective oxidative 1,6‐conjugate addition. The practical asymmetric cross‐dehydrogenative coupling of 2,2‐diarylacetonitriles and diverse α‐substituted cyclic 1,3‐dicarbonyls proceeds, for vicinal quaternary...
A manganese‐catalyzed oxidative kinetic resolution of cyclic benzylic ethers through asymmetric C(sp3)−H oxidation is reported. The practical approach is applicable to a wide range of 1,3‐dihydroisobenzofurans bearing diverse functional groups and substituent patterns at the α position with extremely efficient enantiodiscrimination. The generality of the strategy was further demonstrated by efficient...
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