1: ortho-N-trimethylsilyl-toluidine With n-butyllithium in tetrahydrofuran; hexane 6 h; Heating; 2: methyl 5-hexenoate in tetrahydrofuran; hexane T=20°C; 1 h;

potassium hydroxide in acetone T=20°C; 3 h;

1: 2-(pent-4-en-1-yl)-1H-indole With sodium hydride in N,N-dimethyl-formamide T=0°C; 0.166667 h; 2: benzyl chloride in N,N-dimethyl-formamide T=20°C; 4 h;