The first catalytic asymmetric methallylation of ketones is reported. The catalyst, which is generated from titanium tetraisopropoxide, H8-BINOL, 2-propanol, and tetramethallylstannane, reacts with ketones in acetonitrile to afford tertiary homoallylic alcohols in fair to excellent yields (55-99%) and fair to high enantioselectivities (46-90%). Ozonolysis of the resulting products provides access to chiral beta-hydroxy ketones, which are not readily prepared from direct asymmetric aldol reaction of acetone with ketones.
Catalytic asymmetric methallylation of ketones with an (H8-BINOLate)Ti-based catalyst. Publishing Authors By Initials
Catalytic asymmetric methallylation of ketones with an (H8-BINOLate)Ti-based catalyst. Journal Published:
PUBLICATION TYPE: Research Support, N.I.H., Extr
Journal: Organic letters
VOLUME: 8
Page Numbers: 4413-6
Journal Abbreviation:
ISSN: 1523-7060
DAY: 28
MONTH: Sep
YEAR: 2006
Catalytic asymmetric methallylation of ketones with an (H8-BINOLate)Ti-based catalyst. Information
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LANGUAGE: eng
NlmUniqueID: 100890393
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Grant and Affiliation Information for Catalytic asymmetric methallylation of ketones with an (H8-BINOLate)Ti-based catalyst.
AFFILIATION: P. Roy and Diana T. Vagelos Laboratories, University of Pennsylvania, Department of Chemistry, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, USA.
Country: United States
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MEDLINETA: Org Lett
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