Journal Article Asymmetric Synthesis of Multisubstituted Dihydrobenzofurans by Intramolecular Conjugate Addition of Short-Lived C–O Axially Chiral Enolates

Tomohara, Keisuke  ,  Kasamatsu, Koji  ,  Yoshimura, Tomoyuki  ,  Furuta, Takumi  ,  Kawabata, Takeo

64 ( 7 )  , pp.899 - 906 , 2016 , 日本薬学会 = The Pharmaceutical Society of Japan
ISSN:0009-2363
NCID:AA00602100
Description
Enantioselective intramolecular conjugate addition reactions of short-lived C–O axially chiral enolates have been developed. The reactions proceeded with inversion of the configuration and provided dihydrobenzofurans with contiguous tetra- and trisubstituted carbon centers in up to 96% enantiomeric excess (ee).
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http://dspace.lib.kanazawa-u.ac.jp/dspace/bitstream/2297/46146/1/PH-PR-YOSHIMURA-T-899.pdf

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