1: 75 percent / HIO3/I2/H2SO4 / acetic acid; H2O; CCl4 / 2 h / 40 °C 2: 70 percent / Pd(OAc)2, PPh3 / 20 h 3: 1) BuLi / ether, hexane View Scheme

1: 70 percent / Pd(OAc)2, PPh3 / 20 h 2: 1) BuLi / ether, hexane View Scheme

n-butyllithium ether, hexane; Yield given. Multistep reaction;