sodium iodide in acetone 20 h; Heating;

1: 88 percent / Na / tetrahydrofuran / 1.) reflux, overnight, 2.) reflux, 12 h 2: 77 percent / pyridine / 24 h / 0 °C 3: 84 percent / NaI / acetone / 20 h / Heating View Scheme

1: 77 percent / pyridine / 24 h / 0 °C 2: 84 percent / NaI / acetone / 20 h / Heating View Scheme

tri-n-butyl-tin hydride in benzene T=70°C; 6 h; Irradiation; Title compound not separated from byproducts;