1: 3-Nitro-9H-carbazole With tetrabutylammomium bromide; sodium hydride in tetrahydrofuran 0.166667 h; 2: 1-bromo-octane in tetrahydrofuran 0.166667 h;

1.1: copper(II) nitrate*2.5H2O; acetic acid; acetic anhydride / 0.75 h / 60 °C 2.1: tetrabutylammomium bromide; sodium hydride / tetrahydrofuran / 0.17 h 2.2: 0.17 h View Scheme