A facile and efficient protocol for the synthesis of 4,5-dihydrofuran derivatives via iodine-mediated cyclization of various 2-(2′,3′-allenyl)acetylacetates with CaH2 as the base has been developed. The yields range from moderate to good. The resulting products can be used for further elaboration by palladium-catalyzed coupling reactions.
已经开发了一种通过
碘介导的以
CaH2 为碱的 2-(2',3'-烯基)
乙酰乙酸酯环化合成 4,5-二氢
呋喃衍
生物的简便有效的方案。产量范围从中等到良好。所得产物可用于通过
钯催化的偶联反应进一步加工。