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IJC-B Vol.44B(09) [September 2005] >

Title: Synthesis of 5-(2-5'-aryl-3'-isoxazolyl)-3,6-dimethylisoxazolo[4,5-b]pyridines
Authors: Rajanarendar, E
Srinivas, M
Ramesh, P
Ramu, K
Keywords: deoxygenation
,-unsaturated system
isoxa¬zole ring formation
Issue Date: Sep-2005
Publisher: CSIR
IPC CodeInt.Cl.7 C 07 D
Abstract: Isoxazolopyridine-N-oxides 2 are deoxygenated to pyridines 3 by treatment with PCl3. 5-Acetyl-3,6-dimethylisoxazolo[4,5-b]­pyri­dine 3 is condensed with aromatic aldehydes to give , -unsaturated carbonyl moiety at position-5, which then cyclizes to isoxazole ring by reaction with hydroxylamine hydrochloride in sodium acetate-acetic acid to result in title compounds 7. All the new compounds 3-7 have been characterized by elemental analyses and spectral (IR, 1H NMR and mass) data.
Page(s): 1927-1930
ISSN: 0975-0983(Online); 0376-4699(Print)
Source:IJC-B Vol.44B(09) [September 2005]

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