On 1,2‐benzisoxazole‐3‐acetic acid

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Abstract
The proposed 6‐ and 7‐methyl‐1,2‐benzisoxazole‐3‐acetic acids (3) have been shown to be 6‐ and 7‐methyl‐4‐hydroxyimino‐2‐oxo‐chromans. The method of preparation of these unknown acids was demonstrated by the synthesis of 1,2‐benzisoxazole‐3‐acetic acid, starting from 3‐methyl‐1,2‐benzisoxazole. Comparative results of the auxin test are reported.