1.1: acetonitrile / Heating 1.2: 81 percent / tetrabutylammonium fluoride / acetonitrile; tetrahydrofuran / 1.5 h / Heating 2.1: LiAlH4 / diethyl ether / 1 h 3.1: 1.52 g / triethylamine / CHCl3 4.1: 1.30 g / pyridinium p-toluenesulfonate / methanol; CHCl3 / 1 h / Heating 5.1: trifluoroacetic acid / 0.08 h / 20 °C 6.1: H2 / 10 percent Pd/C / acetic acid; methanol / 760 Torr 6.2: 1 M hydrochloric acid View Scheme