sodium hydride in N,N-dimethyl-formamide

1: 80 percent / Ba(OH)2*8H2O / H2O / 24 h / 20 °C 2: 80 percent / HCl / H2O / 1 h / Heating 3: 57 percent / sodium hydride / dimethylformamide View Scheme

1: 80 percent / HCl / H2O / 1 h / Heating 2: 57 percent / sodium hydride / dimethylformamide View Scheme

1.1: 59 percent / HBr; acetic acid / dioxane / 12 h / 20 °C 2.1: zinc; 1,2-dibromoethane; trimethylsilylchloride / tetrahydrofuran / 20 °C 2.2: 30 percent / (o-furyl)3P / bis(dibenzylideneacetone)palladium(0) / tetrahydrofuran / 12 h / 20 °C View Scheme