New Route to Stabilize Ruthenium Nanoparticles with Non-Isolable Chiral N-Heterocyclic Carbenes
作者:Luis Miguel Martínez-Prieto、Angélique Ferry、Patricia Lara、Christian Richter、Karine Philippot、Frank Glorius、Bruno Chaudret
DOI:10.1002/chem.201502601
日期:2015.11.23
Ru nanoparticles (RuNPs) stabilized by non‐isolable chiral N‐heterocyclic carbenes (NHCs), namely SIDPhNp ((4S,5S)‐1,3‐di(naphthalen‐1‐yl)‐4,5‐diphenylimidazolidine) and SIPhOH ((S)‐3‐((1S,2R)‐2‐hydroxy‐1,2‐diphenylethyl)‐1‐((R)‐2‐hydroxy‐1,2‐diphenylethyl)‐4,5‐dihydro‐3H‐imidazoline), have been synthesized through a new procedure that does not require isolation of the free carbenes. The obtained RuNPs
通过不可分离的手性N杂环卡宾(NHC)稳定的Ru纳米颗粒(RuNP),即SIDPhNp((4 S,5 S)-1,3-di(萘-1-基)-4,5-diphenylimidazolidine)和SIPhOH((S)‐3 ‐((1 S,2 R)‐2‐羟基‐1,2‐二苯乙基)‐‐‐(((R ‐‐‐ 2‐羟基‐1,2‐二苯乙基))‐ 4,5‐二氢-3 H-咪唑啉),是通过不需要分离游离卡宾的新方法合成的。所获得的RuNPs已通过最先进的技术进行了表征,并且通过FTIR和固态MAS NMR对CO的配位研究了其表面化学性质,这表明存在游离的和反应性的Ru位点。已经在涉及不同位点之间竞争的各种氢化反应中测试了它们的催化活性,从而观察到了有趣的选择性差异,但没有对映选择性。