Process for producing 3-isoxazolecarboxylic acid

C - Chemistry – Metallurgy – 07 – D

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C07D 261/18 (2006.01) C07D 261/04 (2006.01) C07D 263/34 (2006.01)

Patent

CA 2183426

A process for producing 3-isoxazolecarboxylic acid as an intermediate for synthesizing valuable compounds, which comprises reacting a compound represented by general formula (I) with hydroxylamine to yield a compound represented by general formula (II) and treating the obtained compound with an alkali, wherein R1 represents lower alkyl; R2 represents a carboxyl-protecting group; and X represents halogen and Y represents hydrogen, or X and Y are combined together to form a single bond.

Un procédé de production d'acide 3-isoxazolecarboxylique utilisé comme intermédiaire dans la synthèses de composés de valeur, consiste à faire réagir un composé représenté par la formule générale (I) avec une hydroxylamine afin de produire un composé représenté par la formule générale (II), puis à traiter le composé obtenu avec un alkali. Dans lesdites formules (I, II), R?1¿ représente alkyle inférieur, R?2¿ représente un groupe carboxyle protecteur, X représente halogène et Y représente hydrogène, ou X et Y sont combinés pour former une seule liaison.

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