hydroxylamine hydrochloride; tetrabutylammomium bromide; sodium acetate in 1,4-dioxane; water T=20°C; 72 h;

1: triethylamine / ethanol; N,N-dimethyl-formamide / 2 h 2: hydroxylamine hydrochloride; tetrabutylammomium bromide; sodium acetate / 1,4-dioxane; water / 72 h / 20 °C View Scheme