Rhodium-Catalyzed Intramolecular [4 + 2] Cycloadditions of Alkynyl Halides
作者:Woo-Jin Yoo、Anna Allen、Karine Villeneuve、William Tam
DOI:10.1021/ol052412o
日期:2005.12.1
[reaction: see text] Cationic rhodium(I)-catalyzed intramolecular [4 + 2] cycloadditions of diene-tethered alkynylhalides were found to occur in good yields (70-87%). The halide moiety is compatible with the cycloaddition reactions, and no oxidative insertion to the alkynylhalide was observed. The halogen-containing cycloadducts could be transformed into a variety of products that are difficult or