Iodolactonization and iodoetherification are crucial reactions in organic synthesis as well as in structure elucidation. Iodolactonization was utilized elegantly for stereoselective functional group incorporation and manipulation in Corey's prostaglandin synthesis 1 as well as in total syntheses of tumor inhibitors eg vernolepin and vernomenin 2 and in vitamin D 2 and D 3 3 synthesis. Likewise iodoetherification has been used in important organic syntheses eg of ...