Selective Reduction in 2′-Hydroxychalcones

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• 2c: 1H-NMR (CDCl3): δ (ppm): 3.12–3. US (m, UH, -CH2CK2-), 3.78–3.95 (bs, 9H, 3x-OCH3), 6.07 & 6.13 (each d, J = 2.0Hz, 2H, H-3′, 5′), 6.90 & 7.23 (each d, J = 9.0Hz, 4H, H-2, 3,5,6), 13.92 (s, 1H, -OH)., Anal. Calcd. for C19H22O6: C, 65.90; H, 6.36., Found: C, 65.46; H, 6. 24., 2f: 1H-NMR (CDCl3): δ (ppm): 2.90–3.35 (m, 4H, -CH2CH2-) 3.75 & 3.85 (each s, 6H, 2x-OCH3) 6.35–6.50 (m, 2H, H-3′, 5′), 6.80 & 7.25 (eacn d, J=9. OHz, 4H, H-2, 3,5,6), 7.60 (d, J=9.0Hz, 1H, H-6′) & 13.40 (s, 1H, -OH)., Anal. Calcd. for C17H1804: C, 71.32; H, 6.29, Found: C, 71. O;. H, 5.96
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