Influence of the steric hindrance of the aryl group of pentavalent triarylbismuth derivatives in ligand coupling reactions
作者:Alexey Fedorov、Sébastien Combes、Jean-Pierre Finet
DOI:10.1016/s0040-4020(98)01185-5
日期:1999.1
Tris(ortho-tolyl)bismuth dichloride derivatives react with nucleophiles under basic conditions to give good to high yields of the C-arylated substrates. Under the same conditions, trimesitylbismuth dichloride affords only poor yields of the C-mesitylated substrates. Similar influence of the substitution pattern of tris(ortho-tolyl)bismuth diacetate derivatives was observed in the copper-catalysed arylation
在碱性条件下,三(邻甲苯基)二氯化铋衍生物与亲核试剂反应,可以使C-芳基化底物获得良好或高收率。在相同条件下,三氯化间苯二甲酸铋仅提供差的C-甲磺化底物产率。在铜催化的羟基或氨基芳基化反应中,观察到了三(邻甲苯基)铋二乙酸铋衍生物的取代方式的相似影响。