4.6 Article

Copper-catalyzed N-methylation/ethylation of sulfoximines

Journal

ORGANIC & BIOMOLECULAR CHEMISTRY
Volume 13, Issue 39, Pages 9934-9937

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ob01558h

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Funding

  1. National Natural Science Foundation of China [21202013, 21272028]
  2. Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology [BM2012110]
  3. Priority Academic Program Development of Jiangsu Higher Education Institutions (PARD)

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A protocol for the copper-catalyzed N-methylation of sulfoximines with di-tert-butyl peroxide (DTBP) was developed. This protocol has good functional group tolerance leading to N-methylated sulfoximines in moderate to good yields. Besides, N-ethylation of sulfoximines was achieved in the presence of bis(1,1-dimethylpropyl) peroxide as the ethylating agent under a standard procedure.

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