Regio- and Stereoselective Synthesis of (E)- and (Z)-Allylsulfones from Aldehydes and Alkynes
Several (E)- and (Z)-1-p-toluenesulfonyl(=tosyl)-2-alkenes, allylsulfones, were regio- and stereoselectively prepared from aldehydes and alkynes, respectively, in good yields by application of the results of our previous investigation on "syn-effect" and
1,3-REARRANGEMENT OF ALLYLIC P-TOLYL SULFONES CATALYZED BY AND ITS APPLICATION TO THE SYNTHESIS OF α,β-UNSATURATED KETONES
The treatment of allylic p-tolyl sulfones with a catalytic amount of gave the 1,3-rearrangement products in high yields.A conveient method for the preparation of α,β-unsaturated ketones using as a catalyst from the 1,3-rearrangemen