“…1‐(4‐bromophenyl)‐3‐(4‐chlorophenyl)propan‐1‐one (3 be) Yield 294.5 mg 91 % (Catalyst Ru1 ), 300.9 mg 93 % (Catalyst Ru2 ); 1 H NMR (400 MHz, CDCl 3 ) δ 7.78 (d, J =8.6 Hz, 2H), 7.57 (d, J =8.6 Hz, 2H), 7.24 (d, J =8.4 Hz, 2H), 7.15 (d, J =8.4 Hz, 2H), 3.22 (t, J =7.5 Hz, 2H), 3.01 (t, J =7.5 Hz, 2H). 13 C NMR (101 MHz, CDCl 3 ) δ 197.90, 139.55, 135.50, 129.89, 129.61, 128.73, 128.46, 40.20, 29.33.…”