1: 80 percent / LDA / tetrahydrofuran; hexamethylphosphoric acid triamide; hexane / 1 h / -78 °C 2: 72 percent / CuCl2, sodium acetate / palladium chloride / 3 h View Scheme

sodium acetate; copper dichloride; palladium dichloride 3 h;

sodium acetate; copper dichloride; palladium dichloride in methanol 3 h;