Consecutive condensation, C-N and N-N bond formations: a copper- catalyzed one-pot three-component synthesis of 2H-indazole.

@article{Kumar2011ConsecutiveCC,
  title={Consecutive condensation, C-N and N-N bond formations: a copper- catalyzed one-pot three-component synthesis of 2H-indazole.},
  author={Manian Rajesh Kumar and Ahbyeol Park and Namjin Park and Sunwoo Lee},
  journal={Organic letters},
  year={2011},
  volume={13 13},
  pages={3542-5}
}
2H-Indazoles are synthesized using copper-catalyzed, one-pot, three-component reactions of 2-bromobenzaldehydes, primary amines, and sodium azide. A copper 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 a variety of functional groups.