Naphthidine di(radical cation)s-stabilized palladium nanoparticles for efficient catalytic Suzuki–Miyaura cross-coupling reactions
作者:Christophe Desmarets、Rafik Omar-Amrani、Alain Walcarius、Jacques Lambert、Benoît Champagne、Yves Fort、Raphaël Schneider
DOI:10.1016/j.tet.2007.10.091
日期:2008.1
temperature in 1,4-dioxane from PdCl2 using N,N′-bis(4-methoxyphenyl)-(1,1′-binaphthyl)-4,4′-diamine (naphthidine) as reducing and stabilizing agent. This procedure resulted in Pd(0) particles possessing an average diameter of ca. 25 nm stabilized against aggregation due to a barrier of the naphthidine di(radical cation) Napht2.2+. These particles were evaluated for their capability to act as catalysts
使用N,N'-双(4-甲氧基苯基)-(1,1'-联萘基)-4,4'-二胺(萘啶)在室温下从PdCl 2在1,4-二恶烷中制备稳定的Pd(0)纳米颗粒)作为还原剂和稳定剂。该步骤导致由于萘啶二(自由基阳离子)Napht 2.2+的阻挡而使平均直径约为25 nm的Pd(0)颗粒对聚集稳定。对这些颗粒在铃木-宫浦偶联反应中作为催化剂的能力进行了评估。Pd(0)/ Napht 2.2+提供了一种通用且方便的方法,可在80°C和好氧条件下,由芳基溴化物或碘化物和具有广泛官能团的1,4-二恶烷中的硼酸制备联芳基。