JOURNAL OF CHEMICAL RESEARCH 2013 651
24 h. After the finish of the reaction, the crude product was directly
filtered through a pad of celite and washed with DCM (2 mL). The
filtrate was washed with a saturated solution of NaHCO3 (3×2 mL)
and the aqueous layer was extracted again with DCM (3×2 mL). The
combined organic layer was concentrated under reduced pressure. The
corresponding crude product was purified on a flash column using
ethyl acetate and hexane as eluate to afford the pure compounds. All
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94–96 °C. H NMR (300 MHz, CDCl3) δ 7.45–7.39 (m, 3 H), 7.16 (d,
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145.6, 143.7, 141.6, 133.2, 132.9, 129.5, 128.5, 128.1, 16.0, 14.1; MS (EI)
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Y.-B. Huang is thankful for the funding support of the “Jiangsu
Overseas Research & Training Program for University
ProminentYoung&Middle-agedTeachers”andthe“Qing-Lang
Project in the Jiangsu Provincial Department of Education”.
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Received 4 July 2013; accepted 3 September 2013
Paper 1302042 doi:10.3184/174751913X13794472538144
Published online: 11 November 2013
JCR1302042_FINAL.indd 651
04/11/2013 16:52:10