1: 90 percent / mercuric bromide, mercuric cyanide, 4A molecular sieves / acetonitrile / 1 h / Ambient temperature 2: 78 percent / 60 percent acetic acid / H2O / 0.5 h / 80 °C / Heating 3: 1.) glacial acetic acid, sodium acetate; 2.) methanol / 1.) 10 percent palladium-on-charcoal; 2.) 2 M sodium methoxide / 1.) ethanol, water, heating for 17 h at 75 deg C; 2.) 20 min View Scheme

1: 90 percent / mercuric bromide, mercuric cyanide, 4A molecular sieves / acetonitrile / 1 h / Ambient temperature 2: 78 percent / 60 percent acetic acid / H2O / 0.5 h / 80 °C / Heating 3: 67 percent / mercuric bromide, mercuric cyanide, 4A molecular sieves / acetonitrile / 1 h / Ambient temperature 4: 1.) acetic acid, sodium acetate; 2.) methanol / 1.) 10 percent palladium-on-charcoal; 2.) 2 M sodium methoxide / 1.) ethanol, water, heating for 17 h at 75 deg C; 2.) 30 min View Scheme

1: 90 percent / mercuric bromide, mercuric cyanide, 4A molecular sieves / acetonitrile / 1 h / Ambient temperature 2: 78 percent / 60 percent acetic acid / H2O / 0.5 h / 80 °C / Heating View Scheme