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1. Institute of Organic Chemistry, Karlsruhe Institute of Technology, Germany
1H NMR (300 MHz, CDCl3, ppm) δ = 7.28–7.22 (m, 4H, Ar-H), 6.78–6.72 (m, 4H, Ar-H), 3.72 (s, 6H, 2xCH3), 1.82 (s, 6H, 3xCH2).
In accordance with https://dx.doi.org/10.14272/AWYXHOMVLAPYSJ-UHFFFAOYSA-N/1HNMR.
1H NMR (400 MHz, CDCl3, ppm) δ = 7.34–7.30 (m, 4H, Ar-H), 6.84–6.80 (m, 4H, Ar-H), 3.79 (s, 6H, 2xCH3), 1.89 (s, 6H, 3xCH2).
13C NMR (100 MHz, CDCl3, ppm) δ = 159.9 (Cquat, 2xCArO), 136.2 (+, 4xCHAr), 123.7 (Cquat, 2xCArS), 114.6 (+, 4xCHAr), 56.9 (–, 3xCH2), 55.4 (+, 2xCH3), 43.0 (Cquat, 2xCCH2).
EI (m/z, 70 eV, 70 °C): 344 (18) [M]+, 205 (100) [M–C7H7OS]+, 139 (69) [C7H7OS]+.
HRMS (EI, 70 eV): calcd for C19H20O232S2 [M]+: 344.0906, found 344.0905.
IR (ATR, ṽ) = 2983, 2958, 2919, 2850, 2836, 1737, 1589, 1570, 1490, 1462, 1441, 1404, 1377, 1285, 1239, 1198, 1183, 1173, 1132, 1098, 1057, 1030, 1007, 922, 891, 875, 829, 813, 798, 758, 714, 663, 640, 628, 584, 555, 545, 524, 503, 487, 446, 405, 387, 381 cm–1.