... The Journal of Organic ... The organic layer was washed with brine, dried over Na 2 SO 4 , and evaporated to give 6 as a pale yellow oil (22 g, 94% yield). 1 H NMR (CDCl 3 ) δ: 9.08 (d, J = 1.8 Hz, 1H), 8.79 (d, J = 2.4 Hz, 1H), 8.38 (dd, J = 1.8, 2.4 Hz, 1H), 4.38 (q, J = 7.0 Hz, 2H ...
[Bleicher, Leo S.; Cosford, Nicholas D. P.; Herbaut, Audrey; Stuart McCallum; McDonald, Ian A. Journal of Organic Chemistry, 1998 , vol. 63, # 4 p. 1109 - 1118]