Alder-ene reactions of arynes

Org Lett. 2013 Apr 19;15(8):1938-41. doi: 10.1021/ol4005905. Epub 2013 Mar 29.

Abstract

Efficient Alder-ene reactions of various arynes generated directly from bis-1,3-diynes are described. The reactivity of ene donors with different tethers was examined under thermal and metal-catalyzed conditions, which indicates that both the formation of aryne intermediates and their ene reactions are less sensitive to the catalyst than to the structural features of the substrates.