2 Pyridone (data page)

1H-NMR

¹H-NMR (400 MHz, CD₃OD): /ρ = 8.07 (dd,³J = 2.5 Hz,⁴J = 1.1 Hz, 1H, C-6), 7.98 (dd,³J = 4.0 Hz,³J = 2.0 Hz, 1H, C-3), 7.23 (dd,³J = 2.5 Hz,³J = 2.0 Hz, 1H, C-5), 7.21 (dd,³J = 4.0 Hz,⁴J = 1.0 Hz, 1H, C-4).

13C-NMR

(100.57 MHz, CD₃OD): ρ = 155.9 (C-2), 140.8 (C-4), 138.3 (C-6), 125.8 (C-3), 124.4 (C-5)

UV/Vis spectroscopy

(MeOH):ν_max (lg ε) = 226.2 (0.44), 297.6 (0.30).

IR spectroscopy

(KBr): ν = 3440 cm⁻¹–1 (br, m), 3119 (m), 3072 (m), 2986 (m), 1682 (s), 1649 (vs), 1609 (vs), 1578 (vs), 1540 (s), 1456 (m), 1433 (m), 1364 (w), 1243 (m), 1156 (m), 1098 (m), 983 (m), 926 (w), 781 (s), 730 (w), 612 (w), 560 (w), 554 (w), 526 (m), 476 (m), 451 (w).

Mass spectrometry

EI-MS (70 eV): m/z (%) = 95 (100) [M⁺], 67 (35) [M⁺ - CO], 51 (4)[C₄H₃⁺].