Chemistry Letters, Vol.31, No.11, 1142-1143, 2002
The selective 1,2-addition of ketene silyl acetals to alpha,beta-unsaturated ketones promoted by a copper(I)-phosphine complex
The thermal reaction of an alpha,beta-unsaturated ketones with a ketene silyl acetal in the presence of the copper(I)halide-phosphine complex brought about the selective formation of the products based on 1,2-addition, while use of the copper(I)halide alone afforded the 1,4-adduct type of product.