1 2 h, and provides 1 in 60% and 2 in 56% yields. We report herein a further improvement in the preparation of these important synthetic reagent^.^ Our synthesis, which is similar in concept but simpler in practice to a recent preparation of (3-halo acetal^,^ is based on three different reports in the literature:(1) the reported reaction of iodotrimethylsilane with a, p- unsaturated ketones to give 3-iodo enol silyl ethers:(2) the ability to employ ...
