Triphenylphosphine → HCID 22280037, compound

Participants

Reaction Steps

Preparation of {7-[4(3,5-Dichloro-benzyloxy)-benzylsulfanyl]-indan-4-yloxy}-acetic acid methyl ester (compound 77A) The product from Example 75C (0.42 g, 1 mmoles), (3,5-dichlorophenyl)-methanol (0.24 g, 1.3 mmoles), triphenyl phosphine (0.38 g, 1.5 mmoles) and 0.23 mL of diethyl azodicarboxylate (0.25 g, 1.5 mmoles) were dissolved in 9 mL of tetrahydrofuran. The reaction mixture was stirred at room temperature under nitrogen for 18 hrs. The reaction mixture was evaporated to give a residue, which was flash chromatographed (silica gel, 20% ethyl acetate in hexane) to afford the title compound in good purity. MS m/z 265 Step 2. Preparation of {7-[4-(3,5-Dichloro-benzyloxy)-benzylsulfanyl]-indan-4-yloxy}-acetic acid (compound 77) The title compound was prepared in the manner analogous to Example 1 using 77A. mp 134-135° C.; IR (KBr) cm−1: 3070, 1747, 1708, 1572, 1432, 1244; 400 MHz 1H NMR (DMSO-d6): δ 12.95 (br(s), 1H), 7.51-7.53 (m, 1H), 7.42-7.45 (m, 2H), 7.07-7.13 (m, 2H), 7.04 (d, 1H, J=8.6 Hz), 6.83-6.90 (m, 2H), 6.56 (d, 1H, J=8.6 Hz), 5.05 (s, 2H), 4.61 (s, 2H), 3.93 (s, 2H), 2.75 (t, 2H, J=7.5 Hz), 2.66 (t, 2H, 7.5 Hz), 1.88 (pentet, 2H); MS m/z 487 (M−1). Anal. Calc'd for C25H22Cl2O4S: C, 61.35; H, 4.53; found: C, 61.01; H, 436.

Provenance & Evidence