A new synthesis of 5, 7??dicarboxy??2, 1??benzisoxazolin??3??one

CK Kim, BA Krasavage…

Index: Kim, C. K.; Krasavage, B. A.; Maggiulli, C. A. Journal of Heterocyclic Chemistry, 1985 , vol. 22, p. 127 - 128

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Abstract

Abstract Condensation of methyl 2-isoxazolin-5-on-3-yl acetate (3) and 3-(N, N- dimethylamino)-2-ethoxycarbonylacrolein (6) gave 5-ethoxycarbonyl-7-methoxycarbonyl-2, 1-benzisoxazolin-3-one (7a). Simple hydrolysis of the diester 7a afforded 5, 7-dicarboxy-2, 1- benzisoxazolin-3-one (7b).