Abstract
(Carboethoxymethylene)triphenylphosphorane 1 can undergo the tandem reaction of iodination-oxidation-Wittig reaction with alcohol in the presence of N-iodosuccinimide (NIS) and manganese dioxide. The reaction constitutes a stereoselective one-pot procedure for the preparation of Z-configured
α
-iodo-
α
,
β
-unsaturated esters in good to excellent yield.