Crotylzirconium derivatives as a new reagent for the threo selective synthesis of β-methylhomoallyl alcohols |
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Authors: | Yoshinori Yamamoto Kazuhiro Maruyama |
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Affiliation: | Department of Chemistry, Faculty of Science, Kyoto University Kyoto 606, Japan |
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Abstract: | Crotylzirconium derivatives, prepared from the reaction of crotylmagnesium chloride or crotyllithium with bis (cyclopentadienyl) zirconium dichloride, undergo a rapid reaction with aldehydes to afford the threo product predominantly. The ratio of Cram/anti-Cram product via this reagent is ca. ~ . |
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