Visible-light-initiated tandem synthesis of difluoromethylated oxindoles in 2-MeTHF under additive-, metal catalyst-, external photosensitizer-free and mild conditions
a College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China
b School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
c Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Changsha University of Science and Technology, Changsha 410114, China
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