1: H2 / 5 percent Pt/C / 1,2-dimethoxy-ethane / 24 h / 2585.74 Torr 2: BF3*Et2O; t-BuONO / 1,2-dimethoxy-ethane / 1 h / -5 °C 3: 49 percent / 0.5 h / 170 °C 4: 95 percent / AlCl3 View Scheme

1: 52 percent / KF; 18-crown-6 / tetrahydrothiophene 1,1-dioxide / 32 h / 180 °C 2: H2 / 5 percent Pt/C / 1,2-dimethoxy-ethane / 24 h / 2585.74 Torr 3: BF3*Et2O; t-BuONO / 1,2-dimethoxy-ethane / 1 h / -5 °C 4: 49 percent / 0.5 h / 170 °C 5: 95 percent / AlCl3 View Scheme

aluminium trichloride Acylation;

1: BF3*Et2O; t-BuONO / 1,2-dimethoxy-ethane / 1 h / -5 °C 2: 49 percent / 0.5 h / 170 °C 3: 95 percent / AlCl3 View Scheme

hydrogenchloride in sodium hypobromide

sodium hypochlorite Oxidation;