1: benzyl chloride With [2,2']bipyridinyl; CuSO4‵5H2O; sodium thiosulfate * H2O in methanol; water T=80°C; 2 h; Schlenk technique; 2: 4-amino-benzoic acid ethyl ester With tert.-butylnitrite in methanol; water T=0 - 80°C; 4.66667 h; Schlenk technique;

in N,N-dimethyl-formamide T=155°C; 2 h;

1: sodium; liquid ammonia / Eintragen von Benzylchlorid in das Reaktionsgemisch 2: sulfuric acid View Scheme

sulfuric acid