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Catalytic Enantioselective α‐Ketol Rearrangement
Author(s) -
Wu Hua,
Andres Rémi,
Wang Qian,
Zhu Jieping
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201812244
Subject(s) - enantioselective synthesis , desymmetrization , stereocenter , kinetic resolution , chemistry , bicyclic molecule , catalysis , stereochemistry , organocatalysis , organic chemistry , combinatorial chemistry
A highly enantioselective α‐ketol rearrangement has been developed. In the presence of a chiral Cu‐bisoxazoline complex, achiral β‐hydroxy‐α‐dicarbonyls were isomerized to chiral α‐hydroxy‐β‐dicarbonyls and their bicyclic derivatives in excellent yields and enantioselectivities. Enantioenriched 2‐acyl‐2‐hydroxy cyclohexan‐1‐ones, dihydroxyhexahydrobenzofuranones, and dihydroxyhexahydro‐cycloheptafuranones, with up to three stereocenters, were readily prepared from achiral starting materials in one operation. The reaction is applicable to the desymmetrization of meso substrates and kinetic resolution of racemic alcohols.