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4. After evaporation of the solvent, the residue was purified by chromatography using cyclohexane-EtOAc (6:1) as eluent to give pure 2.
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4. After evaporation of the solvent, the residue was purified by chromatography using cyclohexane-EtOAc (6:1) as eluent to give pure 2.
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Data for Compounds 2 Compound(E)-2a: 1H NMR (400 MHz, CDCl3, δ, 3.85 (s, 3 H, OCH3, 4.17 (s, 2 H, CH2, 7.32-7.39 (m, 5 H, ArH, 7.94 (s, 1 H, ArCH, 13C NMR (100 MHz, CDCl3, δ, 49.56, 52.32, 98.27, 126.66, 128.69, 128.84, 128.92, 134.88, 144.85, 168.27. IR (film, ν, 3060, 3028, 2952, 1724, 1633, 1577 cm-1. MS (70 eV, m/z, 292 [M, Anal. Calcd for C12H11Cl 3O2: C, 49.09; H, 3.78. Found: C, 49.38; H, 3.74. Compound (E)-2b: 1H NMR (400 MHz, CDCl3, δ, 2.37 (s, 3 H, CH3, 3.86 (s, 3 H, OCH3, 4.19 (s, 2 H, CH2, 7.21 (d, 2 H, J, 8.0 Hz, ArH, 7.35 (d, 2 H, J, 8.0 Hz, ArH, 7.91 (s, 1 H, ArCH, 13C NMR 100 MHz, CDCl 3, δ, 21.30, 49.74, 52.31,98.48,125.76,129.14,129.46,131.97, 139.3
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2: C, 42.57; H, 2.98. Found: C, 42.33; H, 2.95...
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