The iododecarboxylation reactions of alpha-carboxy ketene dithioacetals were presented. The alpha-iodo ketene dithioacetals 3 and alpha,alpha-diiodo ketene dithioacetals 4 were prepared in excellent yields simply from reactions of alpha-carboxy ketene dithioacetals 2 with iodine in aqueous media.
CLEMO N. G.; PATTENDEN G., J. CHEM. SOC. PERKIN TRANS.,(1986) N 12, 2133-2136