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ChemicalBook CAS DataBase List ISOXAZOLE-4-CARBOXYLIC ACID ETHYL ESTER
80370-40-7

ISOXAZOLE-4-CARBOXYLIC ACID ETHYL ESTER synthesis

3synthesis methods
-

Yield: 81%

Reaction Conditions:

with hydroxylamine hydrochloride in ethanol for 2 h;Heating / reflux;

Steps:

21e
Experiment 21; The intermediate 2, was prepared in 37% yield using the method as described in ref.: J. Org. Chem. 1982, 47, 2216-17. The ethyl ester 4 was prepared by the literature method (Ref: Gazz. CMm. Ital. 1947, 77, 206-12). Following lithium aluminium hydride reduction gave the alcohol 5 which was oxides to the aldehyde 6.

References:

AVEXA LIMITED WO2007/124546, 2007, A1 Location in patent:Page/Page column 61

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