作者:Stefan Kirsch、Tobias Harschneck、Michael Wegener
DOI:10.1055/s-0030-1259938
日期:2011.5
The NIS-mediated iodocyclization of 1,6-enynes is described. While 1,6-enynes with a cation-stabilizing substituent at C2 position undergo 6-exo cyclization in poor yields, 1,6-enynes with donor substituents at C1 position favor the 5-exo mode of cyclization. The resulting five-membered carbocycles are obtained in moderate to good yields, thus demonstrating another facet in the iodocyclization of enynes.
介绍了 NIS 介导的 1,6-enynes 碘环化反应。在 C2 位具有阳离子稳定取代基的 1,6-enynes 会发生 6-exo 环化,但产率较低,而在 C1 位具有供体取代基的 1,6-enynes 则倾向于 5-exo 环化模式。由此产生的五元碳环的产率从中等到良好,从而展示了烯炔类化合物碘环化的另一个方面。