作者:Jérémie Fournier Dit Chabert、Christel Gozzi、Marc Lemaire
DOI:10.1016/s0040-4039(02)00128-4
日期:2002.3
Direct 3-substituted benzothiophene arylation using a Heck-type reaction with Pd(OAc)2/n-Bu4NBr as a catalytic system is reported. This reaction was found to perform relatively fast whatever the electron-donating or the electron-withdrawing group at position 3. We also extended this reaction to several aromatic halides, such as benzene, naphthalene and pyridine derivatives, synthesising new 2-arylbenzo[b]thiophenes
报道了使用Pd(OAc)2 / n- Bu 4 NBr作为催化体系的Heck型反应直接进行3-取代的苯并噻吩芳基化反应。发现该反应无论在3位上的供电子基团还是吸电子基团上都相对较快地进行。我们还将这一反应扩展到了几种芳族卤化物,例如苯,萘和吡啶衍生物,合成了新的2-芳基苯并[ b ]。噻吩产量中等至良好。