SYNTHESIS OF FUSED PYRAZOLES <i>VIA</i> INTRAMOLECULAR CYCLIZATION OF APPROPRIATELY <i>ortho</i>-SUBSTITUTED NITROARENES AND NITROHETEROARENES

Authors

  • Grygoriy Ya. Remennikov Priaxon AG, 37-37A Gmunder St., Munich D-81379

DOI:

https://doi.org/10.1007/3522

Keywords:

2, 1-benzisoxazoles, fused pyrazole 1-oxides, fused pyrazoles, 1-hydroxyindazoles, nitroarenes, nitrohetarenes, intramolecular cyclization

Abstract

Among numerous approaches for the synthesis of condensed      heterocycles bearing a pyrazole nucleus, the intramolecular cyclization of a suitable ortho-substituted nitroaromatic and     nitroheteroaromatic precursors is one of the most convenient routes. This review summarizes recent developments in the application of this approach for the synthesis of fused pyrazoles, their 1-oxides, and 1-hydroxy derivatives.

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Published

2017-03-09

Issue

Vol. 53 No. 2 (2017)

Section

Review Articles