Synthesis of 3-Cyanoindole Derivatives Mediated by Copper(I) Iodide Using Benzyl Cyanide
作者:On Ying Yuen、Pui Ying Choy、Wing Kin Chow、Wing Tak Wong、Fuk Yee Kwong
DOI:10.1021/jo3028278
日期:2013.4.5
Copper-mediated direct and regioselective C3-cyanation of indoles using benzyl cyanide as the cyanide anion source is presented. A wide range of indoles undergo cyanation smoothly by employing a reaction system of copper(I) iodide under open-to-air vessels.
copper-mediated complete cleavage and selective transformation of multiple inert chemical bonds of three easily available feedstocks, i.e., a sp2C—Hbond in indoles, three sp3C—H bonds and one C—Nbond in a methyl carbon atom in TMEDA, and the C≡N triple bond in CH3CN. This reaction proceeds via tandem carbon and nitrogen atom transfer, and allows for the direct and efficient cyanation of indoles, presenting a