1: trimethyl-sulfonium iodide With sodium hydroxide in water Corey-Chaykovsky reaction; 0.166667 h; 2: 3-phenyl-propenal With 1,3-bis(3,5-bis(trifluoromethyl)phenyl)urea in dichloromethane; water T=20°C; 38 h; Inert atmosphere;

scandium tris(trifluoromethanesulfonate) in tetrahydrofuran T=100°C; Meinwald rearrangement-Fischer indolisation; 1 h; Molecular sieveAce pressure tube;