4-(N,N-dimethlyamino)pyridine; N-ethyl-N,N-diisopropylamine in dichloromethane T=0 - 20°C; Inert atmosphere;

zirconium tetrachloride T=20°C; 4 h;

zirconium tetrachloride T=20°C; 5 h;

zirconium tetrachloride T=20°C; 6 h;

1.1: 4-(N,N-dimethlyamino)pyridine; N-ethyl-N,N-diisopropylamine / dichloromethane / 0 - 20 °C / Inert atmosphere 2.1: [2,2']bipyridinyl; trimethylsilyl trifluoromethanesulfonate / dichloromethane / 0.5 h / 0 °C / Inert atmosphere 2.2: 24 h / 20 °C / Inert atmosphere 3.1: 4-(N,N-dimethlyamino)pyridine; N-ethyl-N,N-diisopropylamine / dichloromethane / 0 - 20 °C / Inert atmosphere View Scheme

1.1: [2,2']bipyridinyl; trimethylsilyl trifluoromethanesulfonate / dichloromethane / 0.5 h / 0 °C / Inert atmosphere 1.2: 24 h / 20 °C / Inert atmosphere 2.1: 4-(N,N-dimethlyamino)pyridine; N-ethyl-N,N-diisopropylamine / dichloromethane / 0 - 20 °C / Inert atmosphere View Scheme

zirconium tetrachloride in isopropyl alcohol 4 h; Heating;

1: n-decylmethoxymethylether With [2,2']bipyridinyl; trimethylsilyl trifluoromethanesulfonate in dichloromethane T=0°C; 0.5 h; Inert atmosphere; 2: allyl alcohol in dichloromethane T=20°C; 24 h; Inert atmosphere; chemoselective reaction;