1: ethene With polystyrene-bound selenenyl bromide in tetrahydrofuran T=20°C; 0.0833333 h; 2: 3-methyl-phenol With tetra-(n-butyl)ammonium iodide; potassium carbonate; potassium iodide in N,N-dimethyl-formamide T=20°C; 10 h; 3: With dihydrogen peroxide in tetrahydrofuran T=20°C; 0.5 h;

potassium hydroxide T=175°C;

sodium hydroxide; ethanol T=180 - 190°C;

ethanol T=180°C;

potassium hydroxide; water anschliessendes Einleiten von Acetylen bei 170-175grad/15 at;

(i) NaOH, (ii) KOtBu, DMSO; Multistep reaction;