hydrogenchloride; titanium tetraethoxide 1.) EtOH, 70 deg C, 3 h 2.) reflux; Yield given. Multistep reaction;

Multi-step reaction with 3 steps 1: LiN(i-Pr)2 / 1 h / -78 °C2: TiCl4, Ti(i-PrO)4 / CH2Cl2 / 1 h / -78 °C3: 1.) CF3COOH 2.) hydrogen / 2.) PtO2 / 1.) CH2Cl2, 0 deg C --> r.t., 3 h 2.) EtOH, 75 psi, r.t., 24 h