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Highly enantioselective arylation of symmetrical epoxides with phenyllithium promoted by chiral schiff bases and salens

โœ Scribed by Nobuki Oguni; Yuko Miyagi; Kenji Itoh

Book ID
108387168
Publisher
Elsevier Science
Year
1998
Tongue
French
Weight
155 KB
Volume
39
Category
Article
ISSN
0040-4039

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Highly efficient preparation of optically active 5-hydroxy-3-oxoesters by enantioselective reaction of diketene with aldehydes promoted by novel chiral Schiff base-titanium alkoxide complexes
โœ Masahiko Hayashi; Kiyoshi Tanaka; Nobuki Oguni ๐Ÿ“‚ Article ๐Ÿ“… 1995 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 199 KB

Optically active 5-hydroxy-3-oxoesters 1 can be obtained in up to 91% enantiomeric excess (e.e.) by the enantioselective reaction of diketene with aldehydes promoted by novel chiral Schiff base,---titanium alkoxide complexes. Optically active derivatives 1 can be converted into 6-substituted 4-hydr