“…Diazenes 4-6 and 10-12 were synthesized according to the reported method. [1][2][3][4] A 20-mL screw neck vial was charged with DMSO (10 mL), compounds 1-3, and 7-9 (1mmol), respectively, tetramethylethylenediamine (TMEDA) (295 mg, 2.5mmol), CuCl (2 mg, 0.02 mmol) and CCl4 (20 mmol, 10 equiv). After 1-3 hours (until TLC analysis showed complete consumption of the corresponding Schiff base), the reaction mixture was poured into an ~0.01 M solution of HCl (100 mL, ~pH 2-3), and extracted with dichloromethane (3x20 mL).…”