1: N-(tert-butyloxycarbonyl)pyrrole With lithium diisopropyl amide in tetrahydrofuran; hexane T=-71°C; 6 h; 2: dimethyl-dichlorosilane in tetrahydrofuran; hexane T=-71 - 20°C; 10 h; 3: With sodium hydrogencarbonate in tetrahydrofuran; hexane; water cooling; Further stages.;

1.1: lithium diisopropylamide / tetrahydrofuran / 6 h / -71 °C 1.2: tetrahydrofuran / 10 h / -71 - 20 °C 2.1: 2.183 g / NaHCO3 / tetrahydrofuran; H2O / 0 °C View Scheme