Journal
AUSTRALIAN JOURNAL OF CHEMISTRY
Volume 69, Issue 9, Pages 1049-1053Publisher
CSIRO PUBLISHING
DOI: 10.1071/CH16014
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- Council of Scientific and Industrial Research, New Delhi, India
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A multicomponent reaction capable of affording a wide range of novel 7,11-dihydro-6H-chromeno[ 3,4-e]isoxazolo[5,4-b]pyridin-6-one derivatives via one-pot three-component condensation of 4-hydroxycoumarin, aromatic aldehydes, and 5-amino-3-methylisoxazole in ionic liquid 1-butyl-3-methylimidazolium hydrogen sulfate ([C(4)mim][HSO4]) is reported. Structures have been confirmed by spectral and X-ray studies. Crystal packing of 4b has also been reported. Green solvent, short reaction time, easy workup, and high yields are the salient features of the present protocol.
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