trifluoroacetic acid 24 h; Ambient temperature;

1: tris-(dibenzylideneacetone)dipalladium(0); 2,2'-bis-(diphenylphosphino)-1,1'- binaphthyl; sodium t-butanolate / toluene / 64 h / 70 °C / Inert atmosphere 2: triethylsilane; trifluoroacetic acid / dichloromethane / 20 °C / Inert atmosphere 3: palladium 10 on activated carbon; hydrogen / methanol / 0.5 h / 20 °C / 760.05 Torr / Inert atmosphere View Scheme