Abstract
A regio- and stereoselective method for preparation of novel functionalized pyrimidine derivatives containing the vinylsulfanyl group has been developed based on addition reactions of 2-thiouracils with phenylethynyl ketones. Reactions with ketones containing the disubstituted triple bond afford adducts of Z-stereochemistry, whereas addition to ketone with the terminal triple bond gives preferentially products of E-configuration.
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