Reactions of silver(I) acetate–iodine and thallium(I) acetate–iodine with substituted cyclopropanes

Lewis Base‐Promoted Ring‐Opening 1,3‐Dioxygenation of Unactivated Cyclopropanes Using a Hypervalent Iodine Reagent

“…[3] In stark contrast, the ring-opening reactions of unactivated cyclopropanes with electrophiles remain scarce,w hich is attributable to the formidable challenge in controlling the reactivity and regioselectivity. [4] Our group has developed several methodologies for the electrophilic halogenation of olefins using Lewis bases as catalysts. [5] It is believed that the Lewis base-activated halonium species could react with olefinic substrate to give the key intermediate haliranium ion followed by the ringopening of the haliranium ion by anucleophile to give desired halogenated product.…”