water; hydrogen bromide; sodium nitrite T=0°C; hergestellten wss.Diazoniumsalz-Loesung mit Kupfer-Pulver,zuletzt bei 100grad;

in various solvent(s) 6 h; Heating;

1: 1.) Mg / 1.) ether, 2.) ice-bath, 4 h 2: 1.) conc. HCl, sodium nitrite, 2.) sodium azide, sodium acetate / 1.) acetic acid, water, below 5 deg C 3: 86 percent / various solvent(s) / 3 h / Heating 4: 40 percent / various solvent(s) / 6 h / Heating View Scheme

1: 1.) conc. HCl, sodium nitrite, 2.) sodium azide, sodium acetate / 1.) acetic acid, water, below 5 deg C 2: 86 percent / various solvent(s) / 3 h / Heating 3: 40 percent / various solvent(s) / 6 h / Heating View Scheme

1: 91 percent 2: 1.) Mg / 1.) ether, 2.) ice-bath, 4 h 3: 1.) conc. HCl, sodium nitrite, 2.) sodium azide, sodium acetate / 1.) acetic acid, water, below 5 deg C 4: 86 percent / various solvent(s) / 3 h / Heating 5: 40 percent / various solvent(s) / 6 h / Heating View Scheme

1: 86 percent / various solvent(s) / 3 h / Heating 2: 40 percent / various solvent(s) / 6 h / Heating View Scheme

nitrosyl sulfuric acid; sulfuric acid; sodium nitrite