1: stannic chloride / acetonitrile / Ambient temperature 2: 980 mg / sodium methoxide / methanol / 5 h / Ambient temperature View Scheme

1: stannic chloride / acetonitrile / Ambient temperature 2: 980 mg / sodium methoxide / methanol / 5 h / Ambient temperature 3: 74 percent / tetrachloropyrophosphate / acetonitrile / Ambient temperature View Scheme

1: stannic chloride / acetonitrile / Ambient temperature 2: 980 mg / sodium methoxide / methanol / 5 h / Ambient temperature 3: 74 percent / tetrachloropyrophosphate / acetonitrile / Ambient temperature 4: 67 percent Spectr. / sodium nitrite, acetic acid / H2O / 4 h / Ambient temperature View Scheme