Nucleophile-Controlled Trapping of Gold Carbene by Nitriles and Water: Synthesis of 5<i>H</i>-Pyrimido[5,4-<i>b</i>]indoles and 2-Benzylidene-3-indolinones
作者:Yun-Long Zhu、Yi-Fan Dong、Si-Ru Wang、You-Gui Li、Xiang Wu、Long-Wu Ye
DOI:10.1021/acs.orglett.3c03856
日期:2024.1.26
A gold-catalyzed, nucleophile-controlled cascadereaction of N-(2-azidophenyl-ynyl)methanesulfonamides with nitriles and water is described that provides structurally diverse 5H-pyrimido[5,4-b]indoles and 2-benzylidene-3-indolinones in good to excellent yields. Mechanistic studies indicate that the β-sulfonamido-α-imino gold carbene is the key intermediate which is generated through the gold-catalyzed