1.1: ethyl acetate / 1.5 h / 0 - 20 °C 1.2: 18.33 h / 0 - 20 °C 2.1: potassium phosphate / copper(l) iodide; trans-N,N'-dimethylcyclohexane-1,2-diamine / toluene / 24 h / 120 °C / Inert atmosphere View Scheme

1.1: ethyl acetate / 1.5 h / 0 - 20 °C 1.2: 18 h / 0 - 20 °C 2.1: potassium phosphate; trans-N,N'-dimethylcyclohexane-1,2-diamine / copper(l) iodide / toluene / 24 h / 120 °C / Inert atmosphere View Scheme

1.1: ethyl acetate / 1.5 h / 0 - 20 °C 1.2: 18 h / 0 - 20 °C 2.1: potassium phosphate; trans-N,N'-dimethylcyclohexane-1,2-diamine / copper(l) iodide / toluene / 24 h / 120 °C / Inert atmosphere View Scheme