Transition-Metal-Free TEMPO Catalyzed Aerobic Oxidation of Alcohols to Carbonyls Using an Efficient Br2 Equivalent under Mild Conditions |
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| Authors: | Jie Zhang Zengqiang Jiang Dan Zhao Guozhen He Shuangli Zhou Shiqing Han |
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| Affiliation: | 1. College of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing, Jiangsu 211816, China
2. College of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing, Jiangsu 211816, China; Key Laboratory of Synthetic Chemistry of Natural Products, Shanghai Institute of Organic Chemistry, CAS,Shanghai 200032, China |
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| Abstract: | An effective transition‐metal‐free catalytic system is developed for aerobic oxidations of alcohols. Using catalytic amount of bromide‐bromate coupling, H2SO4, and NaNO2, together with 2,2,6,6‐tetramethylpiperidine N‐oxyl radical (TEMPO) in the presence of air, various alcohols could be converted into the corresponding aldehydes or ketones in good to excellent isolated yields under mild conditions. |
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| Keywords: | aerobic oxidation alcohols bromide-bromate coupling 2,2,6,6-tetramethylpiperidine N-oxyl radical (TEMPO) |
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