Hydrazine hydrate (1:1) → 5-Methyl-3-isoxazoleacetic acid hydrazide

Participants

Reaction Steps

As described for example 112a, (5-methyl-isoxazol-3-yl)-acetic acid methyl ester in butanol was reacted with hydrazine hydrate (2 equivalents) and the resulting mixture was heated under reflux for 90 min. Evaporation of all volatiles afforded the title compound as a white solid (yield: 90%). 1H-NMR (300 MHz, DMSO): δ=2.36 (d, J=0.7 Hz, 3H), 3.39 (s, 2H), 4.25 (s, 2H), 6.13 (d, J=0.7 Hz, 1H), 9.27 (s, 1H).

Provenance & Evidence