Silver-Promoted Site-Selective Intramolecular Cyclization of 2-Methylthiobenzamide Through α-C(sp3)–H Functionalization

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Abstract
Silver-mediated intramolecular α-C(sp3)–H bond functionalization of the methylthio group has been established in the presence of Selectfluor as an additive. This novel strategy provides an efficient access to various diverse sulfur-based heterocycles with good yields and functional group compatibility. It is noteworthy that the completely novel benzooxathiin-4-imine skeletons were reported for the first time in this study.
Funding Information
  • Indiana University-Purdue University Indianapolis
  • National Natural Science Foundation of China (21702019, 21572026)
  • Priority Academic Program Development of Jiangsu Higher Education Institutions
  • National Science Foundation (CHE-1350541)
  • Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University

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