Visible light mediated efficient oxidative benzylic sp(3) C-H to ketone derivatives obtained under mild conditions
Hong Yi1, Changliang Bian, Xia Hu
1College of Chemistry and Molecular Sciences, the Institute for Advanced Studies, Wuhan University, Wuhan, Hubei 430072, P. R. China. aiwenlei@whu.edu.cn.
Abstract:
A photooxygenation of benzylic sp(3) C-H reaction has been demonstrated using O2 mediated by visible light. This protocol provides a simple and mild route to obtain ketones from benzylic sp(3) C-H bonds. Various benzylic sp(3) C-H bonds can be transformed into the desired ketone derivatives in moderate to good yields. The (18)O2 labelling experiments demonstrated that the oxygen introduced into ketone originated from dioxygen. A plausible mechanism has been proposed accordingly.
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