“…1 H NMR (300.18 MHz, DMSO-d 6 ): δ 12.27 (s, 1H, OH), 8.78 (m, 1H, H3), 8.74 (m, 1H, H3′), 8.59 (d, 3 J = 7.9 Hz, 1H, H6), 8.52 (d, 3 J = 7.9 Hz, 1H, H6′), 8.11 (td, 3 J = 7.8 Hz, 4 J = 1.7 Hz, 1H, H5), 8.03 (td, 3 J = 7.7 Hz, 4 J = 1.8 Hz, 1H, H5′), 7.69 (ddd, 3 J = 4.8 Hz, 4 J = 1.1 Hz, 1H, H4), 7.56 (ddd, 3 J = 4.7 Hz, 4 J = 1.1 Hz, 1H, H4′), 7.28 (s, 1H, H9) ppm. 13 Synthesis of 4-Chloro-2,6-bis(2-pyridyl)pyrimidine (8). 4-Hydroxy-2,6-bis(2-pyridyl)pyrimidine 7 (0.88 g, 3.52 mmol) was added slowly to the freshly distilled thionyl chloride (30 mL) under an inert atmosphere.…”