期刊
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
卷 2019, 期 6, 页码 1330-1334出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.201801662
关键词
Amides; Rearrangement; Fluorine
资金
- National Natural Science Foundation of China [21772022]
- Fuzhou University
A method for the synthesis of N-trifluoroacetyl amides through trifluoroacetic anhydride transfer to nitrones by borrowing and returning oxygen atom is reported. The reaction appears to proceed via electrophilic trifluoroacetylation, followed by nucleophilic addition and elimination, and intramolecular substitution, affording N-trifluoroacetyl amides in good to excellent yields. The present method tolerates a wide range of functional groups. Also, nitrones react with difluoroacetic anhydride providing the corresponding N-difluoroacetyl amides. Moreover, the method described could be of interest from a biological point of view, because it constitutes a straightforward strategy for the synthesis of biologically active N-trifluoroacetyl amide analogues.
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