hydrogenchloride; trichloroacetic acid 1.) reflux, 1 h, 2.) MeOH, reflux, 30 min; Multistep reaction. Title compound not separated from byproducts;

hydrogenchloride; trichloroacetic acid 1.) reflux, 1 h, 2.) MeOH, reflux, 30 min; Multistep reaction. Title compound not separated from byproducts;

1: 95 percent / aq. CaCO3 / dioxane / 10 h / Heating 2: 1.) n-BuLi / 1.) hexane, from -78 deg C to 0 deg C, 1 h, 2.) hexane, 12 h View Scheme

1: 72 percent / N-bromosuccinimide, benzoyl peroxide / CCl4 / 3 h / Heating 2: 95 percent / aq. CaCO3 / dioxane / 10 h / Heating 3: 1.) n-BuLi / 1.) hexane, from -78 deg C to 0 deg C, 1 h, 2.) hexane, 12 h View Scheme

n-butyllithium 1.) hexane, from -78 deg C to 0 deg C, 1 h, 2.) hexane, 12 h; Yield given. Multistep reaction;