“…The residue was dried under reduced pressure over phosphorous pentoxide. 2 J HH = 13.7), 7.12 (d, 2H, Ar-H, 4 J HH = 2.3), 7.61 (d, 2H, Ar-H, 4 J HH = 2.3), 7.66 (s, 2H, Ar-H), 7.84 (s, 2H, Ar-H). 13 C NMR (CD 3 OD, δ, ppm): 27.82, 27.85, 28.00, 28.08, 28.11, 28.27, 28.37, 28.43, 30.52, 30.65, 30.68, 31.69, 31.78, 31.87, 34.48, 35.15, 35.19, 35.28, 39.97, 40.34, 40.40, 42.…”