1: 57 percent / NaI, 57percent HI / butan-2-one / 26 h / Heating 2: 1.) Pd(PPh3)2Cl2, CuI, Et3N, 2.) 1N KOH / 1.) reflux, 3 h, 2.) MeOH, room temperature, 1 h View Scheme

bis-triphenylphosphine-palladium(II) chloride; potassium hydroxide; copper(l) iodide; triethylamine 1.) reflux, 3 h, 2.) MeOH, room temperature, 1 h; Yield given. Multistep reaction;