List of used abbreviations - RosDok - Universität Rostock

Me
3,4-Dimethyl-2-phenylsulfanyl-benzoic acid methyl ester
(12b): Starting with 3b (440 mg, 1.5 mmol), 11a (0.23 mL,
2.25 mmol), TiCl4 (0.25 mL, 2.25 mmol) and CH2Cl2 (9 mL),
12b was isolated as a highly viscous oil (163 mg, 40%). 1 H
NMR (250 MHz, CDCl3): δ = 2.19 (s, 3H, CH3), 2.23 (s, 3H,
CH3), 3.75 (s, 3H, OCH3), 7.09-7.13 (m, 7H, Ar); 13 C NMR (63 MHz, CDCl3): δ = 19.1
(CH3), 20.5 (CH3), 52.1 (OCH3), 125.5, 127.3 (ArCH), 127.8 (C), 128.8, 131.2, 131.4
(ArCH), 132.8, 137.0, 140.7, 141.4 (C); IR (KBr, cm −1 ): v� = 2949 (w), 2922 (w), 2855
(w), 1729 (s), 1588 (m), 1487 (s), 1432 (m), 1386 (m), 1281 (s), 1203 (s), 156 (s),
1111 (s); MS (EI, 70 eV): m/z (%) = 272 (M + , 85), 241 (41), 240 (29), 239 (100), 211
(26), 197 (35), 179 (10), 135 (5); HRMS (EI): calcd for C16H16O2S [M + ]: 272.08655,
found: 272.086221.
Et
S
S
O
Me
O
Me
OMe
OMe
3-Ethyl-4-methyl-2-phenylsulfanyl-benzoic acid methyl
ester (12c): Starting with 3c (460 mg, 1.5 mmol), 11a (0.23
mL, 2.25 mmol), TiCl4 (0.25 mL, 2.25 mmol) and CH2Cl2 (9
mL), 12c was isolated as a highly viscous oil (150 mg, 35%).
1 H NMR (250 MHz, CDCl3): δ = 1.00 (t, 2 J = 7.5 Hz, 3H,
CH2CH3), 2.23 (s, 3H, CH3), 2.63 (q, ²J = 7.5 Hz, 2H, CH2), 3.71 (s, 3H, OCH3), 7.08-
7.17 (m, 7H, Ar); 13 C NMR (75 MHz, CDCl3): δ = 14.8, 19.1 (CH3), 26.7 (CH3CH2),
52.0 (OCH3), 125.3, 127.0, 128.7, 129.8, 131.6 (ArCH), 132.8, 137.9, 141.7, 146.5,
169.3 (C); IR (KBr, cm −1 ): v� = 3055 (w), 2965 (w), 2948 (w), 2928 (w), 2870 (w), 2738
(w), 1729 (s), 1580 (m), 1477 (m), 1432 (m), 1393 (w), 1323 (w), 1271 (s), 1200 (s),
1157 (m), 1111 (s), 1080 (m), 1058 (m), 1023 (m), 1013 (m), 959 (m), 893 (w), 826
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