1: 90 percent / CH2Cl2 / 19 h / Heating 2: 1) Ph3SnH, azo-bis(isobutyronitrile), 2.) 80 percent AcOH-H2O / 1.) reflux, benzene, 20 h, 2.) 1 h View Scheme

1: hydroxymercuration 2: 90 percent / CH2Cl2 / 19 h / Heating 3: 1) Ph3SnH, azo-bis(isobutyronitrile), 2.) 80 percent AcOH-H2O / 1.) reflux, benzene, 20 h, 2.) 1 h View Scheme

2,2'-azo-bisisobutyronitrile; triphenylstannane; acetic acid 1.) reflux, benzene, 20 h, 2.) 1 h; Yield given. Multistep reaction;