hydrogenchloride; methanol T=25°C; 3 h;

1: 1) n-BuLi / 1) ether, -50 deg C to 25 deg C, 1.5 h, 2) -78 deg C 2: 80 percent / PDC 3: 90 percent / 2 percent HCl / methanol / 3 h / 25 °C View Scheme

1: 80 percent / PDC 2: 90 percent / 2 percent HCl / methanol / 3 h / 25 °C View Scheme