1: 59 percent / potassium carbonate; sodium iodide / dimethylformamide / 5 h / 20 °C 2: 100 percent / SmI2 / tetrahydrofuran; methanol / 0.08 h / -78 °C 3: 90 percent / hydrogen / Lindlar's catalyst / methanol / 3 h / 20 °C 4: KOH / ethane-1,2-diol / 12 h / 80 °C 5: 35.0 mg / potassium carbonate / acetone / 5 h / Heating View Scheme