Stereochemistry of the [4 + 2] Cycloaddition Reactions of 5-Arylmethylene-2,4-Dithioxo-1,3-Thiazolidines with Acrylonitrile,1-Ethoxy-3-Phenyl- E -2-Propen-1-One and 3-Phenyl- E -2-Propen-1-One

Abstract

The [4 + 2] cycloaddition reactions of 5-arylmethylene-2,4-dithioxo-1,3-thiazolidines with different dienophiles and separation of pure stereoisomeric products are reported.