1: 28 mg / H2 / Raney Ni / methanol / 4 h / Ambient temperature 2: 1.) HCl, isopentyl nitrite / 1.) AcOH, -5 deg C, 20 min, 2.) RT, 24 h 3: 1.5 mg / NaBH4 / methanol / 0.25 h / Ambient temperature View Scheme