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- Title
Synthesis of New Pyrano[2′,3′: 5,6]chromeno[4,3- b]quinolin-4-ones via Aza- DielsAlder Reaction.
- Authors
Kumar, Bejjanki Naveen; Venkatesham, Akkaladevi; Nagaiah, Kommu; Babu, Nanubolu Jagadeesh
- Abstract
New pyrano[2′,3′: 5,6]chromeno[4,3- b]quinolin-4-ones have been synthesized by intramolecular aza- DielsAlder reaction of the azadienes generated in situ from aryl amines and 8-formyl-7-(prop-2-ynyl)2,3-disubstituted chromones using CuFe2O4 nanoparticles as a catalyst in DMSO at 80-90° in good-to-excellent yields. Particularly valuable features of this methodology include simple implementation, inexpensive and reusable catalyst, and good yields. The structures were established by spectroscopic data and further confirmed by X-ray diffraction analysis of one of the products.
- Subjects
NANOPARTICLES; QUINOLINE derivatives; AROMATIC amines; X-ray diffraction; HETEROCYCLIC compounds
- Publication
Helvetica Chimica Acta, 2015, Vol 98, Issue 3, p417
- ISSN
0018-019X
- Publication type
Article
- DOI
10.1002/hlca.201400286