Lithium Hydroxide → HCID 90418029, compound

Participants

Reaction Conditions

Reaction Steps

Into a 25-mL round-bottom flask, was placed ethyl 3-(3,5-difluoro-4-[[3-methoxy-5-(4-methoxyphenyl)-1,2-thiazol-4-yl]methoxy]phenyl)propanoate (50 mg, 0.11 mmol, 1.00 equiv), tetrahydrofuran (3 mL), water (1 mL), LiOH (50 mg, 2.09 mmol, 19.30 equiv). The resulting solution was stirred overnight at 25° C. in an oil bath. The resulting mixture was concentrated under vacuum. The pH value of the solution was adjusted to 5 with hydrogen chloride (2 mol/L). The solids were collected by filtration, washed with n-hexane, dried. This resulted in 8.2 mg (17%) of 3-(3,5-difluoro-4-[[3-methoxy-5-(4-methoxyphenyl)-1,2-thiazol-4-yl]methoxy]phenyl) propanoic acid as a white solid. 1H NMR (300 MHz, CD3OD) δ7.53 (d, J=11.6 Hz, 2H), 7.05 (d, J=11.6 Hz, 2H), 6.81 (d, J=11.6 Hz, 2H), 5.16 (s, 2H), 4.06 (s, 3H), 3.92 (s, 3H), 2.88 (m, 2H), 2.71 (m, 2H). Mass spectrum (ESI, m/z): Calcd. for C21H19F2NO5S, 436.1 (M+H). found 436.0.

Provenance & Evidence