1: 5-bromo-3-methyl-1-(phenylsulfonyl)-1H-pyrrolo[2,3-b]pyridine With lithium diisopropyl amide in tetrahydrofuran T=-40 - -10°C; 0.5 h; 2: methyl iodide in tetrahydrofuran T=-40 - 20°C;

methanol; sodium hydroxide; water in tetrahydrofuran T=20°C; Heating / reflux;