Ethanol → (S)-2-(5-(2-(2-(4-isopropylphenyl)-5-methylthiazol-4-yl)ethoxy)-2,3-dihydro-1H-inden-1-yl)acetic acid

Participants

Reaction Steps

To a solution of Example 27 (305 mg, 0.657 mmol) in a mixture of THF (8 mL), water (8 mL), and EtOH (4 mL), was added LiOH (63 mg, 2.63 mmol). The reaction mixture was vigorously stirred for 24 h, diluted with water (20 mL), and washed with Et2O (10 mL). The aqueous phase was then acidified to pH ˜1 using 1N HCl, and then extracted with CH2Cl2 (4×50 mL). The combined organic layers were dried (Na2SO4), filtered, and concentrated under reduced pressure. The residue was then purified by silica gel flash chromatography (95:5 CH2Cl2/MeOH) to afford product (189 mg, 66%) as a white solid. (C26H29NO3S): LC-MS, RT 3.95 min, M+H 436.4; 1H NMR (CDCl3): δ 1.25 (s, 3H), 1.28 (s, 3H), 1.70-1.82 (m, 1H), 2.32-2.43 (m, 2H), 2.45 (s, 3H), 2.74-2.98 (m, 4H), 3.18 (t, 2H), 3.47-3.54 (m, 1H), 4.28 (t, 2H), 6.72 (dd, 1H), 6.78 (s, 1H), 7.08 (d, 1H), 7.51 (AB quartet, 4H).

Provenance & Evidence