1: (Z)-2-(1H-1,2,3-benzotriazol-1-yl)-1-(3-methylphenyl)ethenyl trifluoromethanesulfonate With sodium methylate in acetonitrile Heating; 2: ethanol With hydrogenchloride Heating; Further stages.;

1.1: 91 percent / 10percent NaOH / tetrahydrofuran / 0.5 h / 20 °C 2.1: NaOCH3 / acetonitrile / Heating 2.2: conc. HCl / Heating View Scheme