1: aluminium chloride; carbon disulfide 2: KOH-solution; ethanol; water 3: sulfur; quinoline View Scheme

caesium carbonate; 9,9-dimethyl-4,5-bis(diphenyl-phosphino)xanthene; tris(dibenzylideneacetone)dipalladium (0) in 1,4-dioxane T=115°C; 26 h; 9;

1.1: 78 percent / xantphos; cesium carbonate / Pd2(dba)3 / dioxane / 24 h / 80 °C 2.1: sodium hydride / dimethylformamide / 3 h / 0 °C 2.2: 87 percent / dimethylformamide / 20 °C 3.1: 66 percent / xantphos; cesium carbonate / Pd2(dba)3 / dioxane / 26 h / 115 °C / 9 View Scheme

1.1: sodium hydride / dimethylformamide / 3 h / 0 °C 1.2: 87 percent / dimethylformamide / 20 °C 2.1: 66 percent / xantphos; cesium carbonate / Pd2(dba)3 / dioxane / 26 h / 115 °C / 9 View Scheme

1.1: 78 percent / xantphos; cesium carbonate / Pd2(dba)3 / dioxane / 24 h / 80 °C 2.1: sodium hydride / dimethylformamide / 3 h / 0 °C 2.2: 87 percent / dimethylformamide / 20 °C 3.1: 66 percent / xantphos; cesium carbonate / Pd2(dba)3 / dioxane / 26 h / 115 °C / 9 View Scheme

1: 1,2,3,4,10,11-hexahydrocarbazole With sodium hydride in tetrahydrofuran; mineral oil T=0°C; 1 h; 2: benzoyl chloride in tetrahydrofuran; mineral oil T=20°C;

diethyl ether Behandlung des Reaktionsprodukts mit Benzoylchlorid;

1: aluminium chloride; carbon disulfide 2: KOH-solution; ethanol; water View Scheme