aluminium trichloride in 1,2-dichloro-ethane 2 h;

1: 89 percent / AlCl3 / benzene / 5 h / Heating 2: hydroxylamine hydrochloride, pyridine / 24 h / Heating 3: 1.) sodium hydride / 1.) DMF, benzene, 80 to 85 deg C, 3h, 2.) RT 4: 63 percent / 5percent aq. NaOH / ethanol / 0.5 h / Heating View Scheme

1: N,N-dimethyl-acetamide / 0.75 h 2: 5percent HCl / ethanol / 2 h / Heating View Scheme