反应详情

Preparation of (3-Methyl-4′-trifluoromethyl-biphenyl-4-yl)-methanol (compound 39A) The title compound was prepared in the manner analogous to Example 3A using (4-bromo-2-methyl-phenyl)-methanol and 4-(trifluoromethyl)benzeneboronic acid. MS m/z 249 (M-OH). Step 2. Preparation of 4chloromethyl-3-methyl-4′-trifluoromethyl-biphenyl (compound 39B) The title compound was prepared in the manner analogous to Example 3B using 39A. 400 MHz 1H NMR (DMSO-d6) δ 7.84 (d, 2H, J=8.3 Hz), 7.76 (d, 2H, J=8.3 Hz), 7.57 (s, 1H), 7.48 (m, 2H), 4.80 (s, 2H), 2.41 (s, 3H). Step 3. Preparation of [5-Methoxy-2-methyl-4-(3-methyl-4′-trifluoromethyl-biphenyl-4-ylmethylsulfanyl)-phenoxy]-acetic acid methyl ester (compound 39C) The title compound was prepared in the manner analogous to Example 1F using 1D and 39B. MS m/z 491 (M+1). Step 4. Preparation of [5-Methoxy-2-methyl-4-(methyl-4′-trifluoromethyl-biphenyl-4-ylmethylsulfanyl)-phenoxy]-acetic acid (compound 39) The title compound was prepared in the manner analogous to Example 1 using 39C. IR cm−1: 1740, 1322; 400 MHz 1H NMR (DMSO-d6) δ 7.81 (d, 2H, J=8.1 Hz), 7.73 (d, 2H, J=8.1 Hz), 7.51 (s, 1H), 7.39 (d, 1H, J=7.8 Hz), 7.16 (d, 1H, J=7.8 Hz), 7.04 (s, 1H), 6.53 (s, 1H), 4.71 (s, 2H), 4.00 (s, 2H), 3.73 (s, 3H), 2.39 (s, 3H), 2.02 (s, 3H); MS m/z 477 (M+1). Anal. Calc'd for C25H23F3O4S.0.1 H2O; C, 62.78; H, 4.89; found: C, 62.57; H, 4.82.

1. customwas prepared in the manner analogous to Example 1F