1: 75 percent / 1.) sec-BuLi / tetrahydrofuran; cyclohexane / 1.) -78 deg C, 4 min, 2.) -78 deg C to RT, 2 h 2: 78 percent / anhydr. KF / dimethylsulfoxide / 3 h / 150 °C View Scheme

hydrogenchloride in methanol 3 h; Ambient temperature;