Lithium Hydroxide → HCID 90404220, compound

Participants

Reaction Steps

To (Z)-ethyl 2-cyano-3-(4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)phenyl)acrylate (C46) (2.5 g, 5.8 mmol) in tetrahydrofuran/methanol/water (3:2:1, 42 mL) was added lithium hydroxide (2.5 mL, 7.5 mmol) and stirred at room temperature for 18 hours. The reaction mixture was concentrated under vacuum, cooled in an ice bath, and acidified with hydrogen chloride (2 N). The precipitate was filtered and washed with cold water to afford the title compound as a brown solid (2.2 g, 82%): 1H NMR (400 MHz, DMSO-d6) δ 9.49 (s, 1H), 8.39 (s, 1H), 8.28 (d, J=8.5 Hz, 2H), 8.18 (d, J=8.5 Hz, 2H), 8.13-8.08 (m, 2H), 7.64 (d, J=8.4 Hz, 2H); ESIMS m/z 401 ([M+H]+).

Provenance & Evidence