REACTION OF α,ο-DIIODIDES WITH t-BUTYLLITHIUM: FACILE ROUTE TO THREE-, FOUR- AND FIVE-MEMBERED CYCLOALKANES

Article abstract of DOI:10.1016/S0040-4039(00)85775-5

Carbocyclic three-, four- and five-membered rings are formed in good to excellent yield (87-100percent) upon treatment of the appropriate α,ο-diiodide with t-butyllithium in pentane-ether solution at -23 deg C.The corresponding dibromides do not undergo clean cyclization.