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Mn(III)-based C-C bond formation: regioselective alpha '-allylation of various alpha,beta-unsaturated, alpha and beta-alkoxy alpha,beta-unsaturated ketones

Tanyeli, Cihangir
Ozdemirhan, D
The Manganese(III) -based regioselective alpha'-keto radical generation of unsaturated ketones is a versatile synthetic procedure with broad applicability. The generated alpha'-keto radical slowly creates a metal enolate in a solvent at reflux. The resultant metal enolate affords the corresponding alpha'-allylated alpha,beta-unsaturated ketones in good yields. This method is the first example of the metal mediated regioselective alpha'-allylation of alpha,beta-unsaturated ketones. The ketones that have alpha or beta-alkoxy groups also work efficiently. (c) 2005 Elsevier Ltd. All rights reserved.