Woollins’ reagent promotes selective reduction of α,β-unsaturated thiazo and selenazolidinones.

In this work we describe the Woollins’ reagent as useful for the selective reduction of the double bond of 2-α,β-unsaturated thiazo and selenazolidinones. The reaction took place in toluene at room temperature to give the corresponding saturated heterocycles in good yields, eleven examples are given. The scope of the reaction is also discussed, being essential the conjugated ester to the double bond. [ABSTRACT FROM AUTHOR]