title: Tandem copper (Cu) catalysed N-arylation-vinylogous nitroaldol condensation of 3,5-disubstituted 4-nitropyrazoles.
abstract: 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.
authors.affiliation: Organic and Biomolecular Chemistry Division, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, 500007, India. surisetti@iict.res.in.
authors.forename: Owk
authors.initials: O
authors.lastname: Obulesu
authors.forename: Jagadeesh Babu
authors.initials: JB
authors.lastname: Nanubolu
authors.forename: Surisetti
authors.initials: S
authors.lastname: Suresh