... The Journal of Organic ... The organic layer was separated, washed with 10% aqueous NH 4 Cl, and dried over anhydrous Na 2 SO 4 . The solution was concentrated to give an ... CDCl 3 , 30 °C) δ: 7.47 (d, 1H, J = 6.8 Hz), 7.41−7.32 (m, 2H), 7.22−7.12 (m, 2H), 6.54 (t, 1H, J = 3.2 Hz ...