1123-49-5, Name is 3,5-Dimethyl-4-nitroisoxazole, belongs to isoxazole compound, is a common compound. Application In Synthesis of 3,5-Dimethyl-4-nitroisoxazoleIn an article, once mentioned the new application about 1123-49-5.
A simple and efficient method has been developed for the synthesis of chromene substituted isoxazolo[4,5-b]pyridine-N-oxides 3 from 3,5-dimethyl-4-nitroisoxazole 1 and substituted 3-acetyl-2-oxo-2H-3-chromenes 2 in presence of piperidine. Pyridin-N-oxides 3 are deoxygenated to corresponding pyridines 4 by treatment with PCl3.
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Reference：
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem