hydrogenchloride; sodium acetate; sodium nitrite 1.) H2O, 0 deg C, 1 h; 2.) THF/H2O, -5 deg C; stirring overnight without ice-sodium chloride bath; Yield given. Multistep reaction;

1: 1.) HCL, NaNO2, 2.) Na acetate / 1.) H2O, 0 deg C, 1 h; 2.) THF/H2O, -5 deg C; stirring overnight without ice-sodium chloride bath 2: Hydrazine hydrate / Raney nickel / ethanol View Scheme