Hydroxyamine hydrochloride → (NE)-N-[[2-fluoro-5-(trifluoromethoxy)phenyl]methylidene]hydroxylamine

Participants

Reaction Steps

A solution of 2-fluoro-5-trifluoromethoxy-benzaldehyde (9.78 g, 47 mmol) in ethanol (50 ml) was treated with hydroxylamine HCl (3.59 g, 52 mmol) and sodium acetate (4.27 g, 52 mmol). The mixture was refluxed for 2 h, the solvent was evaporated and the residue stirred with water (50 ml). The precipitate was filtered, dried and chromatographed (SiO2, heptanes:Ethyl acetate=100:0 to 80:2) and afforded the title compound (9.21 g, 88%) as a white solid. MS: m/e=223.0 [M]+.

Provenance & Evidence