Triethylamine → HCID 53973932, compound

Participants

Reaction Steps

Triethylamine (1.9 g) was added to a mixture of 2-ethoxymethylene-1-(2-nitrophenyl)-butan-1,3-dione (4.9 g) and hydroxylamine hydrochloride (1.3 g) in acetonitrile (100 ml) with stirring. The mixture was stirred for 2 hours and left to stand overnight. The mixture was evaporated almost to dryness and water (100 ml) was added. The mixture was extracted with ethyl acetate (2×75 ml), dried (anhydrous magnesium sulphate) and filtered. The filtrate was evaporated to dryness to give 4-(2-nitrobenzoyl)-5-methylisoxazole (compound 2, 2.4 g) as a brown solid, mp 104.5°-105.5° C.

Provenance & Evidence