hydroxylamine hydrochloride; sodium acetate in ethanol; water T=60°C; 1 h;

1: With hydroxymethylpolystyrene resin-CH2OCO2-N-imidazol in 1,2-dichloro-ethane T=60°C; 72 h; 2: With trifluoroacetic acid in dichloromethane T=35°C; Beckmann rearrangement; 16 h;