1: 1.) TMEDA, n-BuLi / 1) THF, 0 deg C, 20 min; 2) THF, rt, 3 h 2: 70 percent / conc. HCl / methanol / 2 h / Heating View Scheme

1: 1.) TMEDA, n-BuLi / 1) THF, 0 deg C, 20 min; 2) THF, rt, 3 h 2: 70 percent / conc. HCl / methanol / 2 h / Heating 3: 1.) NaH / 1) acetonitrile, reflux, 1 h; 2) acetonitrile, reflux, 2 h 4: 49 percent / Bu3SnH, AIBN / toluene / 6 h / Heating View Scheme