1: With tert.-butyl lithium in tetrahydrofuran; pentane T=-20°C; 2 h; Inert atmosphere; 2: With 1,2-di-iodoethane in tetrahydrofuran; pentane T=-78 - 20°C; 3 h; Inert atmosphere; 3: With water; ammonium chloride in tetrahydrofuran; pentane

1: With tert.-butyl lithium in tetrahydrofuran; pentane T=-20°C; 2 h; 2: in tetrahydrofuran; pentane T=-78 - 20°C; 3 h; regioselective reactionFurther stages;

1: 0.5 h; Molecular sieve; 2: With diphenyl phosphoryl azide; triethylamine T=80°C; 16 h;

1: di-tert-butyl dicarbonate With molybdenium(VI) dioxodichloride in dichloromethane T=20°C; 0.5 h; 2: naphthalen-2-ylamine in dichloromethane T=20°C; 36 h;

1: With tert.-butyl lithium in tetrahydrofuran; pentane T=-20°C; 2 h; 2: in tetrahydrofuran; pentane T=-78 - 20°C; 3 h; regioselective reactionFurther stages;

hydrogenchloride in ethyl acetate 1 h;