hydrogen; palladium in methanol P=760 Torr;

1: K2CO3 / acetone / 72 h / Ambient temperature 2: ethanol, NH4OH / Heating 3: 1.) hexamethyldisilazane, ammonium sulfate, 2.) trimethylsilyl trifluoromethanesulfonate / 1.) reflux, 2 h, 2.) CH3CN, RT, 24 h 4: 0.98 g / H2 / Pd black / methanol / 760 Torr View Scheme

1: 1.) hexamethyldisilazane, ammonium sulfate, 2.) trimethylsilyl trifluoromethanesulfonate / 1.) reflux, 2 h, 2.) CH3CN, RT, 24 h 2: 0.98 g / H2 / Pd black / methanol / 760 Torr View Scheme

1: ethanol, NH4OH / Heating 2: 1.) hexamethyldisilazane, ammonium sulfate, 2.) trimethylsilyl trifluoromethanesulfonate / 1.) reflux, 2 h, 2.) CH3CN, RT, 24 h 3: 0.98 g / H2 / Pd black / methanol / 760 Torr View Scheme