writer：Hazi Ahmad Beejapur, Qi Zhang, Kecheng Hu, Li Zhu, Jianli Wang * , Zhibin Ye *
keywords：TEMPO, immobilization, recovery, chemical transformations, catalysis, applications
source：期刊
specific source：ACS Catalysis
Issue time：2019年
The organic nitroxyl radical, TEMPO (2,2,6,6-tetramethylpiperidine-N-oxyl), finds a variety of industrial applications for chemical transformations. Due to the economic and environmental concerns, the recovery and reuse of TEMPO with maintained high activity are utmost important. In this critical review, we summarize the most important advances made by the scientific community in TEMPO immobilization on various organic and inorganic support materials for recovery and reuse, and discuss the activityand stability, as well as the procedures. Also summarized is the wide range of applications of TEMPO in both homogeneous and heterogeneous forms in chemical transformations, beginning from methodology tuning in synthetic chemistry to the use in polymer chemistry.