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Catalytic Asymmetric Synthesis of 2,2-Disubstituted Oxetanes from Ketones by Using a One-Pot Sequential Addition of Sulfur Ylide


  • This work was supported by Grant-in-Aid for Scientific Research (S) (for M.S.) and Grant-in-Aid for Scientific Research on Priority Areas (No. 20037010, Chemistry of Concerto Catalysis) (for S.M.) from JSPS and MEXT.


Better the second time around: The title compounds were synthesized by using a one-pot double methylene transfer catalyzed by a heterobimetallic La/Li complex. Chiral amplification in the second step was the key to obtaining oxetanes in high enantiomeric excess (see scheme).

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