Multi-step reaction with 3 steps 1: 80 percent / tin(IV) chloride / 1,2-dichloro-ethane / 2.5 h / 50 °C2: 90 percent / sodium methoxide (1N); / methanol / 1 h / Ambient temperature3: 80 percent / 4A molecular sieve / acetic acid / 1 h / 90 °C  

Multi-step reaction with 2 steps 1: 19 g / tin(IV) chloride / CH2Cl2 / 8 h / 0 °C2: 67 percent / potassium carbonate / tetrahydrofuran; methanol / 2 h / Ambient temperature  

Multi-step reaction with 2 steps 1: n-BuNH2 / tetrahydrofuran / 8 h / 25 °C2: DBU / CH2Cl2 / 0.5 h / 0 °C