A facile access to 3-formyl-4-iodofurans is presented. This protocol consists of a Sonogashira cross-coupling of an α-iodo β-alkoxy enone with a terminal alkyne and the subsequent iodonium-promoted heteroannulation–dealkoxylation of the resulting α-alkynyl β-alkoxy enone by treatment with N-iodosuccinimide in aqueous medium.
提供了对 3-formyl-4-iodofurans 的轻松访问。该方案包括 α-
碘 β-烷氧基烯酮与末端
炔烃的 Sonogashira 交叉偶联,以及随后通过在
水性介质中用 N-
碘代琥珀
酰亚胺处理所得 α-炔基 β-烷氧基烯酮的
碘促进杂环化 - 脱烷氧基化.