1: With iron; ammonium chloride; acetic acid in water; N,N-dimethyl-formamide T=50°C; 0.25 h; 2: With sodium carbonate in water; N,N-dimethyl-formamide pH=9;

1.1: 1.5 h / Inert atmosphere; Reflux 2.1: acetic acid; ammonium chloride; iron / N,N-dimethyl-formamide; water / 0.5 h / 50 °C 2.2: pH 9 View Scheme

sodium carbonate; sodium iodide in acetonitrile Inert atmosphereReflux;