Hydrazine → HCID 59240015, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of ethyl 1-(3′-(methylsulfonyl)biphenyl-4-yl)-2-(2-(trifluoromethyl)-phenyl)-1H-imidazole-4-carboxylate (2.63 g, 5.110 mmol) in 8 mL of 1:1 PhMe:Dioxane was added hydrazine (1 mL, 31.86 mmol). The reaction was heated at 90° C. for 12 h and then cooled to room temperature. The reaction was filtered through a small amount of celite to remove a black precipitate and then concentrated and placed on the high vacuum pump. The residue was dissolved in a minimum amount of dichloromethane and slowly added to 200 mL ether with stirring. 100 mL of ether was added and the white precipitate was filtered and rinsed with ether to afford 1-(3′-(methylsulfonyl)biphenyl-4-yl)-2-(2-(trifluoromethyl)-phenyl)-1H-imidazole-4-carbohydrazide (1.77 g, 70%) as a white solid. 1H-NMR (DMSO, 400 MHz) δ 9.21 (s, 1H), 8.16 (s, 1H), 8.14-8.13 (m, 1H), 8.03-8.00 (m, 1H), 7.92-7.89 (m, 1H), 7.85-7.89 (m, 3H), 7.74-7.64 (m, 4H), 7.36 (d, J=8.58 Hz, 2H), 4.44 (brs, 2H), 3.28 (s, 3H); MS (ES): 501.3 [M+H]+ and 523.2 [M+Na]+.

Provenance & Evidence