1: N-methoxycarbonyl-2-trimethylsilylpyrrolidine With trifluorormethanesulfonic acid; tetra-n-butylammonium tetrafluoroborate in dichloromethane T=-78°C; Electrolysis; 2: benzyl bromide With 1,1,1,2,2,2-hexabutyl-distannane in dichloromethane T=-20°C; 1.5 h;

1: N-methoxycarbonyl-2-trimethylsilylpyrrolidine With tetra-n-butylammonium tetrafluoroborate in dichloromethane T=-78°C; Electrolysis; 2: benzyltributylstannane in dichloromethane T=-50°C; 1.5 h; 3: With triethylamine in dichloromethane T=-50 - 20°C;

1: TFA / CH2Cl2 / 14 h / 20 °C 2: 15.5 g / 20 °C View Scheme

T=20°C;

1: N-methoxycarbonyl-2-trimethylsilylpyrrolidine With trifluorormethanesulfonic acid; tetra-n-butylammonium tetrafluoroborate in dichloromethane T=-78°C; Electrolysis; 2: 3-iodoprop-1-ene With 1,1,1,2,2,2-hexabutyl-distannane in dichloromethane T=-20°C; 1 h;

1: N-methoxycarbonyl-2-trimethylsilylpyrrolidine With trifluorormethanesulfonic acid; tetra-n-butylammonium tetrafluoroborate in dichloromethane T=-78°C; Electrolysis; 2: allyl bromide With 1,1,1,2,2,2-hexabutyl-distannane in dichloromethane T=-20°C; 1 h;