Hydrazine hydrate (1:1) → HCID 178433091, compound

Participants

Reaction Steps

To a solution of (E)-1-(5-(3-(dimethylamino)acryloyl)-4-methylthiazol-2-yl)-3-(4-(trifluoromethyl)benzyl)imidazolidin-2-one (0.44 g, 1.00 mmol) in ethanol (10 mL) was added hydrazine monohydrate (0.12 mL, 1.58 mmol). The reaction mixture was heated to reflux for 3 hours. The solvent was removed in vacuo, and the residue was purified by column chromatography to afford the title compound as a colorless solid in 72% yield (0.30 g): mp 212-213° C. (ethyl acetate): 1H NMR (300 MHz, CDCl3& CD3OD) δ 7.54-7.20 (m, 5H), 6.24 (s, 1H), 4.39 (s, 2H), 3.98-3.89 (m, 2H), 3.35-3.30 (m, 2H), 2.27 (s, 3H): 13C NMR (75 MHz, CDCl3 & CD3OD) δ 156.9, 155.8, 139.8, 130.2, 129.8, 129.3, 128.2, 125.6, 125.5, 122.0, 103.8, 47.2, 41.9, 41.8, 15.7: MS (ES+) m/z 408.1 (M+1).

Provenance & Evidence