1: 26 percent / HgO, trichloroacetic acid, BF3*etherat / methanol / 2 h / Ambient temperature 2: 30 percent / H2 / 10 percent Pd/C / ethanol / Ambient temperature View Scheme

boron trifluoride diethyl etherate; mercury(II) oxide; trichloroacetic acid in methanol 2 h; Ambient temperature;