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Highly Enantioselective Addition of Diphenylzinc to Aliphatic and Aromatic Aldehydes Catalyzed by a Readily Available H8-Binol Derivative.

✍ Scribed by Ying-Chuan Qin; Lin Pu

Publisher
John Wiley and Sons
Year
2006
Weight
21 KB
Volume
37
Category
Article
ISSN
0931-7597

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Highly Enantioselective Addition of Diph
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Chiral a-substituted benzyl alcohols are ubiquitous in the structure of organic compounds. A straightforward synthesis of these compounds involves the nucleophilic addition of a phenyl-metal reagent to an aldehyde which produces a carbon-carbon bond and a stereogenic center simultaneously. Because o

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Room temperature and highly enantioselective additions of alkyltitanium reagents to aldehydes catalyzed by a titanium catalyst of (R)-h8-binol
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## Abstract  Three alkyltitanium reagents of RTi(O‐__i__‐Pr)~3~ (R = Cy (**1a**), __i__‐Bu (**1b**), and __n__‐Bu (**1c**)) were prepared in good yields. The high‐resolution mass spectroscopy showed that **1b** and 1**c** in the gas phase are monomeric species. However, the solid state of **1a** re