1: 22 percent / NaNH2-t-BuONa / 24 h / 40 °C 2: 96 percent / H2 / 10percent Pd/C / ethanol / 0.05 h / 20 °C View Scheme

1: 2,4,6-tris(3,4-dichlorophenyl)boroxine With potassium carbonate in 1,4-dioxane T=130°C; 24 h; Inert atmosphere; 2: Bn2N-OBz in 1,4-dioxane Inert atmosphere;

1.1: dipotassium hydrogenphosphate trihydrate / N,N-dimethyl-formamide / 20 °C / Inert atmosphere 2.1: potassium carbonate / 1,4-dioxane / 24 h / 130 °C / Inert atmosphere 2.2: Inert atmosphere View Scheme