Consecutive Condensation, C-N and N-N Bond Formations: A Copper-Catalyzed One-Pot Three-Component Synthesis of 2H-Indazole
Manian Rajesh Kumar, Ahbyeol Park, Namjin Park and Sunwoo Lee*
*Department of Chemistry and Institute of Basic Science, Chonnam National University, Gwangju, 500-757, Republic of Korea, Email: sunwoochonnam.ac.kr
M. R. Kumar, A. Park, N. Park, S. Lee, Org. Lett., 2011, 13, 3542-3545.
DOI: 10.1021/ol201409j (free Supporting Information)
2H-Indazoles are synthesized using a copper-catalyzed one-pot, three-component reaction of 2-bromobenzaldehydes, primary amines, and sodium azide. The catalyst plays the key role in the formation of C-N and N-N bonds. This method has a broad substrate scope with a high tolerance for various functional groups.
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