... The Journal of Organic ... washed twice with 50 mL each of HCl (10%) and once each with 50 mL of NaHCO 3 and 50 mL of H 2 O. Drying of the organic phase over ... mp 82−84 °C. 1 H NMR (250 MHz, CDCl 3 ): δ 7.27−7.60 (m, 8 H), 7.75 (d, 3 J = 8.2 Hz, 1 H), 7.92 (d, 3 J = 8.2 Hz ...