anhydrous magnesium perchlorate; 9-methyl carbazole in water; isopropyl alcohol T=25°C; Irradiation;

1: 91 percent / SnCl4 / acetonitrile / 20 °C 2: 53 percent / 9-methylcarbazole; Mg(ClO4)2*6H2O / propan-2-ol; H2O / 25 °C / Photolysis View Scheme

1: 97 percent / 2,6-lutidine / CH2Cl2 / 2.5 h / 20 °C 2: 91 percent / SnCl4 / acetonitrile / 20 °C 3: 53 percent / 9-methylcarbazole; Mg(ClO4)2*6H2O / propan-2-ol; H2O / 25 °C / Photolysis View Scheme

PSL-C; [BMMIM][PF6] in tetrahydrofuran T=50°C; 66 h; Reactivity; TimeTemperature; regioselective reaction;

sodium methylate in methanol Ambient temperature;