Regiospecific Palladium-Catalyzed Cross-Coupling Reactions Using the Operational Equivalent of 1,3-Dilithiopropyne
作者:Jorge A. Cabezas、Natasha Ferllini
DOI:10.1055/s-0039-1690895
日期:2020.8
A regiospecific palladium-catalyzed cross-coupling reaction using the operational equivalent of the dianion 1,3-dilithiopropyne, with aromatic iodides is reported. This reaction gives high yields of 1-propyn-1-yl-benzenes and 2-(propyn-1-yl)thiophenes in the presence of catalytic amounts of palladium(0) or (II) and stoichiometric amounts of copper iodide. No terminal alkyne or allene isomers were detected
据报道,区域操作性钯催化的交叉偶联反应使用的操作当量为二价阴离子1,3-二硫代丙炔与芳香族碘化物。在催化量的钯(0)或(II)和化学计量的碘化铜的存在下,该反应可得到高产率的1-丙炔基-1-基苯和2-丙炔基噻吩。没有检测到末端炔烃或丙二烯异构体。反应条件温和,可以容忍几个官能团。