1: 1-(3,5-bis(trifluoromethyl)-phenyl)ethan-1-one With phenyltrimethylammonium tribromide in tetrahydrofuran T=20°C; 5 h; 2: thiourea in ethanol 0.5 h; Heating / reflux;

1: 1-(3,5-bis(trifluoromethyl)-phenyl)ethan-1-one With phenyltrimethylammonium tribromide in tetrahydrofuran T=20°C; 5 h; 2: thiourea With sodium sulfate in ethanol 0.5 h; Heating / reflux;