1: 75 percent / HIO3/I2/H2SO4 / acetic acid; H2O; CCl4 / 2 h / 40 °C 2: 72 percent / Pd(OAc)2, PPh3 / 24 h 3: 1) BuLi / 1) ether/hexane, 2h, 2) 2h View Scheme

1: 72 percent / Pd(OAc)2, PPh3 / 24 h 2: 1) BuLi / 1) ether/hexane, 2h, 2) 2h View Scheme

n-butyllithium 1) ether/hexane, 2h, 2) 2h; Yield given. Multistep reaction;