1: trimethyl-sulfonium iodide With sodium hydride in tetrahydrofuran; dimethyl sulfoxide; mineral oil T=20°C; 0.5 h; Schlenk techniqueInert atmosphere; 2: 4-acetyl-benzonitrile in tetrahydrofuran; dimethyl sulfoxide; mineral oil T=0 - 20°C; Inert atmosphereSchlenk technique;

in dimethyl sulfoxide T=20°C; Addition; 12.5 h;