Owk Obulesu, Jagadeesh Babu Nanubolu and Surisetti Suresh
Org. Biomol. Chem., 2015,13, 8232-8240
DOI:
10.1039/C5OB01011J,
Paper
A tandem process involving copper catalysed N-arylation and vinylogous nitroaldol condensation is described. The reaction of 3,5-dialkyl substituted 4-nitropyrazoles and ortho-halo substituted (hetero)aryl aldehydes or ketones furnished 3-nitropyrazolo[1,5-a]quinoline and heteroaryl-fused 3-nitropyrazolo[1,5-a]pyridine derivatives in moderate to high yields.
