... The Journal of Organic ... The aqueous phase was extracted with ethyl acetate (3 × 25 mL), and the combined organic extracts were washed with water (3 × 10 mL) and saturated ... 1221, 821, 754 cm - 1 . 1 H NMR (CDCl 3 , 400 MHz): δ 11.46 (s, 1 H), 8.22−8.24 (d, 1 H, J = 7.99 Hz ...