3-Bromo-1,2-oxazole → 1-(4,5-dihydroisoxazol-3-yl)-1H-1,2,4-triazole-3-carboxylic acid

Participants

Reaction Steps

1-(4,5-dihydroisoxazol-3-yl)-1H-1,2,4-triazole-3-carboxylic acid I-171a and I-171b were prepared using the analogous procedure to Example 35 except that racemic compound I-75 was used as the starting bromo-isoxazole and 1H-1,2,4-triazole-3-carboxylic acid methyl ester as the nucleophile Additionally, at some point during the course of the reaction or workup, the ester hydrolyzed to the corresponding acid. These compounds can be separated using chiral HPLC methods known in the art. For example, see chiral HPLC Method disclosed herein. [M−H]−=356.6 m/z. Activity: C

Provenance & Evidence