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J Org Chem. 2013 Feb 1;78(3):1317-22. doi: 10.1021/jo3026862. Epub 2013 Jan 18.

Synthesis of 1H-indazoles and 1H-pyrazoles via FeBr3/O2 mediated intramolecular C-H amination.

Author information

1
Department of Chemistry, Xixi Campus, Zhejiang University, Hangzhou 310028, P. R. China.

Abstract

A new synthesis of substituted 1H-indazoles and 1H-pyrazoles from arylhydrazones via FeBr(3)/O(2) mediated C-H activation/C-N bond formation reactions is reported. The corresponding 1,3-diaryl-substituted indazoles and trisubstituted pyrazoles were obtained in moderate to excellent yields under mild conditions.

PMID:
23297649
DOI:
10.1021/jo3026862
[Indexed for MEDLINE]

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