Asymmetric hydrogenation of ethyl pyruvate over aqueous dispersed Pt nanoparticles stabilized by a cinchonidine-functionalized β-cyclodextrin
作者:Sébastien Noël、Eleonora Caronia、Hervé Bricout、Iveta Chena Tichá、Stéphane Menuel、Anne Ponchel、Sébastien Tilloy、Alessandro Galia、Éric Monflier、Jindřich Jindřich、Bastien Léger
DOI:10.1016/j.catcom.2020.106272
日期:2021.2
used as stabilizing agent for platinum nanoparticles dispersed in water, but also as chiral modifier for the asymmetric hydrogenation of ethyl pyruvate at 30 °C under 40 bar of hydrogen. This functionalized cyclodextrin allowed getting more stable, more catalytically active and also more enantioselective Pt nanoparticles compared to control catalytic systems. NMR and MALDI-MS analyses clearly showed
辛可尼定官能化的β-环糊精用作分散在水中的铂纳米颗粒的稳定剂,还用作丙酮酸乙酯在30 bar和40 bar氢气下不对称氢化的手性改性剂。与对照催化体系相比,这种官能化的环糊精可以得到更稳定,更具催化活性和对映选择性的Pt纳米颗粒。NMR和MALDI-MS分析清楚地表明,在制备纳米颗粒期间,辛可尼丁接枝物的乙烯基减少了。在氢气压力下,喹啉部分的氢化也得到了证实,这可能是再循环研究过程中遇到的困难的原因。