Hydrochloric Acid → HCID 90418257, compound

Participants

Reaction Conditions

Reaction Steps

Into a 50-mL round-bottom flask, was placed ethyl 2-(5-[[3-(4-ethylphenyl)-5-(trifluoromethyl)-1,2-thiazol-4-yl]methoxy]-2,3-dihydro-1H-inden-1-yl)acetate (220 mg, 0.45 mmol, 1.00 equiv), tetrahydrofuran (5 mL), water (4 mL), LiOH (97 mg, 4.05 mmol, 9.01 equiv). The resulting solution was stirred overnight at 30° C. The pH value of the solution was adjusted to 2 with hydrogen chloride (1 mol/L). The resulting solution was extracted with 3×3 mL of ethyl acetate and the organic layers combined and concentrated under vacuum. The crude product was purified by Prep-HPLC with the following conditions (waters2767-16): Column, SunFire Prep C18,19*150 mm 5 umH PrepC-001(T)18600256819513816414 04; mobile phase, PhaseA:water with 0.05% NH4HCO3, PhaseB:CH3CN(50% CH3CN up to 100% in 10 min, hold 100% in 1.9 min, down to 50% in 0.1 min, hold 50% in 1.9 min); Detector, UV220&254 nm. This resulted in 18 mg (19%) of 2-(5-[[3-(4-ethylphenyl)-5-(trifluoromethyl)-1,2-thiazol-4-yl]methoxy]-2,3-dihydro-1H-inden-1-yl)acetic acid as light yellow oil. 1H NMR: (CDCl3, 400 MHz): δ 7.65 (d, J=8.0 Hz, 2H), 7.30 (d, J=4.8 Hz, 2H), 7.17 (d, J=8.0 Hz, 1H), 6.79-6.85 (m, 2H), 5.05 (s, 2H), 3.58-3.61 (m, 1H), 2.82-2.98 (m, 3H), 2.69-2.75 (m, 2H), 2.44-2.54 (m, 2H), 1.79-1.88 (m, 1H), 1.28 (t, J=7.5 Hz, 3H). Mass spectrum (ESI, m/z): Calcd. for C24H22F3NO3S, 460.1 (M−H). found 460.1.

Provenance & Evidence