Photolysis of an unsaturated alcohol in the presence of HgO and iodine generates an alkoxy radical which can cyclize to form a five-membered ring ether. If a hemiketal is employed, a spiroketal can be formed in good yield.
在HgO和
碘的存在下,不饱和醇的光解会生成烷氧基,该烷氧基可以环化形成五元
环醚。如果使用半
缩酮,则可以以良好的产率形成螺
缩酮。