Pozzi Gianluca, Cavazzini Marco, Quici Silvio, Benaglia Maurizio, Dell'Anna Gianmaria
CNR-Istituto di Scienze e Tecnologie Molecolari, Via Golgi 19, I-20133 Milano, Italy.
Org Lett. 2004 Feb 5;6(3):441-3. doi: 10.1021/ol036398w.
[structure: see text] Poly(ethylene glycol)-supported TEMPO (PEG-TEMPO) has been prepared, and its catalytic activity in the chemoselective oxidation of alcohols with stoichiometric amounts of organic or inorganic oxidants has been investigated. The new metal-free catalyst exhibits high activity and is easily removed from the reaction mixture by filtration. Recycling experiments showed that PEG-TEMPO can be reused up to six times with no loss of catalytic activity.
[结构：见文本] 制备了聚乙二醇负载的2,2,6,6-四甲基哌啶氮氧化物（PEG-TEMPO），并研究了其在化学计量的有机或无机氧化剂存在下对醇进行化学选择性氧化的催化活性。这种新型无金属催化剂表现出高活性，并且通过过滤可轻松从反应混合物中除去。循环实验表明，PEG-TEMPO可重复使用多达六次而催化活性无损失。
