Chinese Journal of Organic Chemistry >
Benzylic Oxidation Catalyzed by Cobalt(II)-Terpyridine Coordination Polymers
Received date: 2021-04-14
Revised date: 2021-06-10
Online published: 2021-08-10
Supported by
Hubei Provincial Scientific and Technological Innovation Team Project(T2020023); Science and Technology Plan Project of Jingmen City(2020ZDYF002)
Direct benzylic C—H oxidation for the synthesis of aromatic ketones was developed. Employing cobalt(II)-terpyridine coordination polymers as catalyst, tert-butyl hydroperoxide (TBHP) as oxidant and Na2CO3 as activator, 19 aromatic ketones were prepared with good to excellent yields (78%~99%) in water. The reaction showed a broad range of substrates with good functional group tolerance and chemical selectivity. By control experiments, a trapping experiment using 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) and detection of intermediates during reaction, a reasonable radical mechanism for this type of reaction was also demonstrated.
Jianqi Liu , Weiwei Fan , Hangxing Xiong , Jingyun Jiang , Hongju Zhan . Benzylic Oxidation Catalyzed by Cobalt(II)-Terpyridine Coordination Polymers[J]. Chinese Journal of Organic Chemistry, 2021 , 41(11) : 4409 -4414 . DOI: 10.6023/cjoc202104028
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