Microwave-assisted Ullmann-Buchwald C-S bond formation using a copper(I) catalyst and trans-cyclohexane-1,2-diol as ligand
作者:Mark C. Bagley、Vincenzo Fusillo、Edward G. B. Hills、Alex T. Mulholland、Joseph Newcombe、Leanne J. Pentecost、Emily L. Radley、Bethan R. Stephens、Christopher C. Turrell
DOI:10.3998/ark.5550190.0013.720
日期:——
aryl halide (1 equiv.) in 2propanol at 120 °C for three hours in the presence of K2CO3 (2 equiv.) as base using copper(I) iodide as catalyst (5 mol%) and trans-cyclohexane-1,2-diol (2 equiv.) as ligand provides a rapid and convenient method for C−S bond formation. The process is most efficient using thiophenol and aryl iodide precursors, both of which may contain electron-donating and electronwithdrawing
在 K2CO3(2 当量)作为碱存在下,使用碘化铜(I)作为碱,在 120 °C 下,将苯硫酚或烷基硫醇(1 当量)和芳基卤化物(1 当量)在 2 丙醇中微波照射三小时催化剂(5 mol%)和反式-环己烷-1,2-二醇(2当量)作为配体为C-S键的形成提供了一种快速方便的方法。该方法使用苯硫酚和芳基碘前体最有效,这两种前体都可能含有给电子和吸电子基团,从而以良好至极好的收率得到相应的二芳基硫醚。