hydrogenchloride; 3 A molecular sieve; acetyl chloride; silver carbonate 1.) 0 deg C, 5 h, 2.) CH3CN, 24 h, RT; Yield given. Multistep reaction;

1: 68 percent / SnCl4 / CH2Cl2 / 6 h / Ambient temperature 2: 90 percent / 0.5 M NaOMe/MeOH / 2 h / Ambient temperature 3: 1.) 0.05 M aq. NaIO4, 2.) NaBH4 / 1.) 20 min, 2.) RT, 2 h View Scheme