Stereo- and regioselective gold(<scp>i</scp>)-catalyzed hydroamination of 2-(arylethynyl)pyridines with anilines
作者:Sandro Cacchi、Giancarlo Fabrizi、Andrea Fochetti、Francesca Ghirga、Antonella Goggiamani、Antonia Iazzetti
DOI:10.1039/c8ob02356e
日期:——
2-(arylethynyl)pyridines with anilines affords stereoselectively Z-enamine products with excellent regioselectivity. The reaction proceeds with moderate to excellent yields and accommodates a diverse range of functional groups on alkynes (ether, bromo, trifluoromethyl, acetyl, and carbomethoxy) and anilines (ether, bromo, chloro, and carbethoxy). The stereochemistry of the obtained enamines is complementary to that
金(2-乙芳基乙炔基)吡啶与苯胺的加氢胺化反应可提供立体选择性的Z-烯胺产物,具有出色的区域选择性。反应以中等至极好的收率进行,并容纳炔烃(醚,溴,三氟甲基,乙酰基和甲氧甲氧基)和苯胺(醚,溴,氯和乙氧基)上的各种官能团。获得的烯胺的立体化学与先前研究中报道的立体化学互补。通过NMR实验获得了观察到的选择性的合理解释。