DBU Acetate Mediated: One-pot Multi Component Syntheses of Dihydropyrano[3,2-c]quinolones

DBU Acetate Mediated: One-pot Multi Component Syntheses of Dihydropyrano[3,2-c]quinolones

Three‐component reaction involving condensation of 1‐methylquinoline‐2,4(1H,3H)‐dione(1), aromatic aldehydes (2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h) and malononitrile/cyanoaceticester (3a, 3b) in{(1,8‐diazabicyclo[5.4.0]‐undec‐7‐en‐8‐ium acetate)}[DBU][Ac] as task‐specific ionic liquid leading to the effic...

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Veröffentlicht in:Journal of heterocyclic chemistry 2016-11, Vol.53 (6), p.1911-1916
Hauptverfasser: Bhupathi, Rajasekar, Madhu, Bandi, Devi, B. Rama, Reddy, Ch. Venkata Ramana, Dubey, P. K.
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container_end_page 1916
container_issue 6
container_start_page 1911
container_title Journal of heterocyclic chemistry
container_volume 53
creator Bhupathi, Rajasekar
Madhu, Bandi
Devi, B. Rama
Reddy, Ch. Venkata Ramana
Dubey, P. K.
description Three‐component reaction involving condensation of 1‐methylquinoline‐2,4(1H,3H)‐dione(1), aromatic aldehydes (2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h) and malononitrile/cyanoaceticester (3a, 3b) in{(1,8‐diazabicyclo[5.4.0]‐undec‐7‐en‐8‐ium acetate)}[DBU][Ac] as task‐specific ionic liquid leading to the efficient synthesis of dihydropyrano[3,2‐c]quinolones (4a, 4b, 4c, 4d, 4e, 4f, 4g, 4h, 4i, 4j, 4k, 4l, 4m, 4n, 4o, 4p) is described. This approach is convenient, mild, and affords the products in high yields without the use of column chromatography.
doi_str_mv 10.1002/jhet.2506
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title DBU Acetate Mediated: One-pot Multi Component Syntheses of Dihydropyrano[3,2-c]quinolones
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