1: 91 percent / hydrogen / 5 percent Pd/C / ethanol / 0.28 h / 760 Torr / Ambient temperature 2: 93.6 percent / N-bromosuccinimide, dibenzoylperoxide, α,α'-azoisobutyronitrile / CCl4 / 3 h / Heating; Irradiation 3: 65.4 percent / sodium, ethanol, 2-nitropropane / dimethylformamide / 2 h / 60 - 65 °C View Scheme

1: 90.8 percent / methanol / 5 h / Heating 2: 71.7 percent / N-bromosuccinimide, dibenzoylperoxide, α,α'-azoisobutyronitrile / CCl4 / 3 h / Heating; Irradiation 3: 61 percent / sodium, 2-nitropropane / ethanol / 2 h / 60 - 65 °C View Scheme