1: lithium hexamethyldisilazane / tetrahydrofuran / -30 - 0 °C / Inert atmosphere 2: trifluoroacetic acid / methanol / 24 h / 50 °C View Scheme

1: lithium hexamethyldisilazane / tetrahydrofuran / -30 - 0 °C / Inert atmosphere 2: trifluoroacetic acid / methanol / 24 h / 50 °C 3: AlCl3, aluminium chloride; ethanethiol / CHCl2 / 0 - 20 °C View Scheme

1: nitromethane With potassium tert-butylate in dimethyl sulfoxide T=10°C; 0.166667 h; 2: (1H-benzo[d][1,2,3]triazol-1-yl)(3,4-dimethoxyphenyl)methanone in dimethyl sulfoxide T=10 - 20°C; 8 h;