1: 10 percent / silver trifluoromethanesulfonate, sym-collidine, 4 Angstroem molecular sieves / CH2Cl2 / Ambient temperature 2: 1.) H2 / 1.) 5percent palladium-on-charcoal / 1.) aq. EtOH, 3h, room temperature; 2.) methanol, 6h 3: 64 percent / 0.5N sodium methoxide / methanol / 0.33 h / Ambient temperature View Scheme

1: 10 percent / silver trifluoromethanesulfonate, sym-collidine, 4 Angstroem molecular sieves / CH2Cl2 / Ambient temperature 2: 1.) H2 / 1.) 5percent palladium-on-charcoal / 1.) aq. EtOH, 3h, room temperature; 2.) methanol, 6h View Scheme

1: 33 percent / silver trifluoromethanesulfonate, sym-collidine, 4 Angstroem molecular sieves / CH2Cl2 / Ambient temperature 2: 1.) H2; / 1.) 5percent palladium-on charcoal / 1.) aq. EtOH, 2h; 2.) pyridine, 1h, room temperature View Scheme

1: 33 percent / silver trifluoromethanesulfonate, sym-collidine, 4 Angstroem molecular sieves / CH2Cl2 / Ambient temperature 2: 1.) H2; / 1.) 5percent palladium-on charcoal / 1.) aq. EtOH, 2h; 2.) pyridine, 1h, room temperature 3: 90 percent / 0.5N sodium methoxide / methanol / 0.25 h / Ambient temperature View Scheme

2,4,6-trimethyl-pyridine; 4 A molecular sieve; silver trifluoromethanesulfonate in dichloromethane Ambient temperature;