Imidazolidinone Nitroxides as Catalysts in the Aerobic Oxidation of Alcohols, en Route to Atroposelective Oxidative Desymmetrization
作者:Marta Carbó López、Guy Royal、Christian Philouze、Pierre Y. Chavant、Véronique Blandin
DOI:10.1002/ejoc.201402324
日期:2014.8
co-catalytic system. In some cases, rapid oxidation to benzaldehyde was accomplished at room temperature under an atmospheric O2 pressure. Moreover, atroposelective desymmetrization was achieved during the aerobic oxidation of a diol catalyzed by an enantiopure imidazolidinone nitroxide. Finally, the electrochemical behavior of the new hydroxylamines and nitroxides was investigated by cyclic voltammetry
基于 imidazolidin-4-one 骨架的新型手性氮氧化物和相应的羟胺,已通过简单的反应顺序从环状硝酮制备。它们被评估为使用不同助催化剂进行苯甲醇有氧氧化的催化剂。咪唑烷酮氮氧化物和羟胺都被证明可以催化反应,环取代基的影响取决于助催化体系。在某些情况下,在室温和大气 O2 压力下快速氧化为苯甲醛。此外,在对映体纯咪唑烷酮硝基氧催化的二醇有氧氧化过程中实现了阻生选择性去对称化。最后,通过循环伏安法研究了新的羟胺和硝基氧的电化学行为,