1: 64 percent / aluminum amalgam / H2O / 5 h / Irradiation 2: 1.) 1M aq. HCl, sodium nitrite, 2.) CuBr / 1.) 0 deg C, 5 min, 2.) H2O, -10 deg C, 3 h View Scheme

in ethanol-N,N-dimethylformamide; benzene

aluminium amalgam in water 5 h; Irradiation;