This page provides supplementary chemical data on 2-pyridone.
Analytical data
NMR spectroscopy
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):νmax (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+].