1: 95 percent / aq. 48percent HF / acetonitrile / Ambient temperature 2: 72 percent / pyridinium chlorochromate / CH2Cl2 3: 80 percent / KHCO3 / methanol; H2O / 2 h / Ambient temperature; further reagents View Scheme

Multi-step reaction with 2 steps 1: 95 percent / aq. 48percent HF / acetonitrile / Ambient temperature2: 72 percent / pyridinium chlorochromate / CH2Cl2  

Multi-step reaction with 3 steps 1: 95 percent / aq. 48percent HF / acetonitrile / Ambient temperature2: 60 percent / K2CO3 / methanol; H2O / 3 h / Ambient temperature3: 70 percent / diethyl azodicarboxylate, triphenylphosphine, formic acid / tetrahydrofuran / 17 h / Ambient temperature; further reagent  

With  hydrogen fluoride in  acetonitrile  Ambient temperature;