hydrogenchloride 1.) 1,2-dimethoxy ethane, reflux, 18 h 2.) 1,2-dimethoxy ethane, room temperature, 2 h; Yield given. Multistep reaction;

sodium formate 70-75 deg C for 3 h then room temperature for 1 h;

1: 93 percent / 3-chloroperoxybenzoic acid / CH2Cl2 / 5 h / 0 °C 2: 60 percent / sodium formate / 70-75 deg C for 3 h then room temperature for 1 h View Scheme

1: 84 percent / dioxane; ethanol / 1 h / Ambient temperature 2: 93 percent / 3-chloroperoxybenzoic acid / CH2Cl2 / 5 h / 0 °C 3: 60 percent / sodium formate / 70-75 deg C for 3 h then room temperature for 1 h View Scheme

1: 84 percent / dioxane; ethanol / 1 h / Ambient temperature 2: 93 percent / 3-chloroperoxybenzoic acid / CH2Cl2 / 5 h / 0 °C 3: 60 percent / sodium formate / 70-75 deg C for 3 h then room temperature for 1 h View Scheme