Condensation of various dienes with fluoroalkyl vinylsulfoxides was studied. Four diastereoisomers were obtained in the case of cyclopentadiene and their structures were assigned by 2D NMR experiments. Diels-Aldercycloaddition occurred with cyclohexadiene, in comparison to phenylvinylsulfoxide, without thermal extrusion of fluoroalkylsulfenic acid. Condensation with anthracene led to a mixture