Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5222767 | Tetrahedron | 2010 | 8 Pages |
Abstract
A practical and environmentally friendly synthesis of 3-aminomethyl-N-tosyl-indazoles is developed. The in situ formed vinyl azines are reacted with amines to furnish amino functionalized anti-hydrazones in excellent yields. Subsequent copper-catalyzed cyclization at ambient temperature is effective and desired compounds are obtained in short reaction times. Also, the formation of bisindazoles is presented for the first time.
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