Asymmetric Transfer Hydrogenation of Benzaldehydes

Issaku Yamada and Ryoji Noyori*

*Department of Chemistry and Research Center for Materials Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan, Email: noyorichem3.chem.nagoya-u.ac.jp

I. Yamada, R. Noyori, Org. Lett., 2000, 2, 3425-3427.

DOI: 10.1021/ol002119

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Abstract

A combination of a chiral Ru complex and KOtBu catalyzes an asymmetric transfer hydrogenation of various benzaldehyde-1-d derivatives with 2-propanol to yield (R)-benzyl-1-d alcohols in high ee and with high isotopic purity. Reaction of benzaldehydes with a DCO₂D-triethylamine mixture and the same Ru catalyst affords the S deuterated alcohols in high ee.

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Key Words

reduction of carbonyl compounds, formic acid

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ID: J54-Y2000