1: 5-methoxy-1H-pyrrololt;2,3-bgt;pyridine With tetrabutylammomium bromide; sodium hydroxide in dichloromethane T=0°C; 0.0833333 h; 2: benzenesulfonyl chloride in dichloromethane T=0 - 25°C; 12.25 h;

N-benzyl-N,N,N-triethylammonium chloride in dichloromethane

1.1: triethylamine; formic acid / palladium 10 on activated carbon / 120 h / 0 - 80 °C 2.1: sodium hydride / N,N-dimethyl-formamide; mineral oil / 0.5 h / 0 °C 2.2: 3 h / 0 °C 3.1: bromine; pyridine / dichloromethane / 2 h / 0 °C 4.1: 2,3-dicyano-5,6-dichloro-p-benzoquinone / dichloromethane / 1 h 5.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.5 h / 25 °C 6.1: copper(I) bromide; sodium / N,N-dimethyl-formamide / 5 h / Inert atmosphere; Reflux 7.1: sodium hydroxide; tetrabutylammomium bromide / dichloromethane / 0.08 h / 0 °C 7.2: 12.25 h / 0 - 25 °C View Scheme

1.1: copper(I) bromide; sodium / N,N-dimethyl-formamide / 5 h / Inert atmosphere; Reflux 2.1: sodium hydroxide; tetrabutylammomium bromide / dichloromethane / 0.08 h / 0 °C 2.2: 12.25 h / 0 - 25 °C View Scheme

1.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.5 h / 25 °C 2.1: copper(I) bromide; sodium / N,N-dimethyl-formamide / 5 h / Inert atmosphere; Reflux 3.1: sodium hydroxide; tetrabutylammomium bromide / dichloromethane / 0.08 h / 0 °C 3.2: 12.25 h / 0 - 25 °C View Scheme

1.1: sodium hydride / N,N-dimethyl-formamide; mineral oil / 0.5 h / 0 °C 1.2: 3 h / 0 °C 2.1: bromine; pyridine / dichloromethane / 2 h / 0 °C 3.1: 2,3-dicyano-5,6-dichloro-p-benzoquinone / dichloromethane / 1 h 4.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.5 h / 25 °C 5.1: copper(I) bromide; sodium / N,N-dimethyl-formamide / 5 h / Inert atmosphere; Reflux 6.1: sodium hydroxide; tetrabutylammomium bromide / dichloromethane / 0.08 h / 0 °C 6.2: 12.25 h / 0 - 25 °C View Scheme