1.1: 72 percent / Zn / tetrahydrofuran / 1 h / Heating 2.1: DBU / dimethylformamide / 20 °C 2.2: 96 percent / dimethylformamide / 20 °C 3.1: diphenylphosphine oxide; di-tert-butyl peroxide / dioxane / 3 h / Heating View Scheme

1.1: DBU / dimethylformamide / 20 °C 1.2: 96 percent / dimethylformamide / 20 °C 2.1: diphenylphosphine oxide; di-tert-butyl peroxide / dioxane / 3 h / Heating View Scheme

di-tert-butyl peroxide; diphenylphosphine oxide in 1,4-dioxane Reduction; 3 h; Heating; Title compound not separated from byproducts;