1: 5-bromo-3-methyl-1H-pyrrolo[2,3-b]pyridine With sodium hydride in tetrahydrofuran T=0°C; 0.5 h; 2: benzenesulfonyl chloride in tetrahydrofuran T=20°C; 1.5 h;

1: With hydrogenchloride; water in tetrahydrofuran Heating / reflux; 2: With water; sodium hydrogencarbonate

potassium acetate; bis-triphenylphosphine-palladium(II) chloride in N,N-dimethyl-formamide T=80 - 90°C;