1: With silver(I) acetate; triethylamine; benzyl alcohol T=20 - 60°C; 1.25 h; 2: With palladium 10 on activated carbon; hydrogen in ethanol T=20°C; 1.5 h; Inert atmosphere;

1.1: 16 h / 100 °C 1.2: 8 h / 60 °C 1.3: 1 h / 0 - 20 °C 2.1: triethylamine; benzyl alcohol; silver(I) acetate / 1.25 h / 20 - 60 °C 2.2: 1.5 h / 20 °C / |Inert atmosphere View Scheme