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Indian Journal of Chemistry -Section B (IJC-B) >
IJC-B Vol.44B [2005] >
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
isoxazolo[4,5-b]pyri¬dine
 , -unsaturated system
cyclisation
isoxa¬zole ring formation |
| Issue Date: | Sep-2005 |
| Publisher: | CSIR |
| IPC Code: | Int.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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