Titanium-Mediated Diastereoselective For
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Sandrine Racouchot; Isabelle Sylvestre; Jean Ollivier; YuriΒ Yu. Kozyrkov; Alexei
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Article
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2002
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John Wiley and Sons
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English
β 312 KB
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Titanium-mediated cyclopropanation of Ξ±,Ξ²-unsaturated esters failed to provide 1-vinylcyclopropanol derivatives in useful yields, but (E)-2-substituted-1-vinylcyclopropanols were formed diastereoselectively from O-protected Ξ²-oxo-and Ξ²halo esters, with the allylic double bond being created subsequen