tetrakis(triphenylphosphine) palladium(0); caesium carbonate in N,N-dimethyl-formamide T=90°C; 4 h; Inert atmosphereSchlenk technique; chemoselective reaction;

tetrakis(triphenylphosphine) palladium(0); caesium carbonate in N,N-dimethyl-formamide T=90°C; 4 h; Inert atmosphereSchlenk technique; chemoselective reaction;

tetrakis(triphenylphosphine) palladium(0); caesium carbonate in N,N-dimethyl-formamide T=90°C; 4 h; Inert atmosphereSchlenk technique; chemoselective reaction;

tetrakis(triphenylphosphine) palladium(0); caesium carbonate in N,N-dimethyl-formamide T=90°C; 4 h; Inert atmosphereSchlenk technique; chemoselective reaction;

tetrakis(triphenylphosphine) palladium(0); caesium carbonate in N,N-dimethyl-formamide T=90°C; 4 h; Inert atmosphereSchlenk technique; chemoselective reaction;

tetrakis(triphenylphosphine) palladium(0); caesium carbonate in N,N-dimethyl-formamide T=90°C; 4 h; Inert atmosphereSchlenk technique; chemoselective reaction;

1: 95 percent / pTs / 0.5 h / 40 °C 2: 76 percent / KOH / methanol / 1 h 3: 61 percent / EtNH2 (30percent), NH2OH*HCl, Cu2Cl2 / methanol; tetrahydrofuran / 3 h / -5 - 0 °C 4: 52 percent / Na2S*H2O, HCl / methanol; acetone / 0.5 h / Heating 5: 88 percent / MnO2 / diethyl ether / 3 h / Heating 6: 1.3 g / conc. HCl / methanol / 0.5 h / Ambient temperature View Scheme