“…R f (PE/EA, 10:1)¼0. 16 3.08 (d, J¼14.8 Hz, 1H), 6.25 (ddd, J¼3.2, 0.9, 0.7 Hz, 1H), 6.35(dd, J¼3.2, 1.9 Hz, 1H), 7.38 (d, J¼1.9, 0.9 Hz, 1H). 13 15 To a solution of the alcohol 4c (1.79 g, 9.48 mmol) in DCM (60 mL) was added DMP (4.42 g, 10.4 mmol).…”