Ammonia → HCID 68277870, compound

Participants

Reaction Steps

A mixture of Intermediate 107, 2-hydroxy-2-(4-methyl-1,3-thiazol-2-yl)propanohydrazide (63 mg, 0.313 mmol), and Intermediate 96, 3,5-difluoro-2-[(3-isothiocyanato-1H-pyrazol-1-yl)methyl]pyridine (79 mg, 0.313 mmol) in dichloromethane (anh) (3 mL) was stirred at room temperature overnight. Reaction mixture was concentrated, residue was treated with sulfuric acid (2 mL, 0.364 mmol) and stirred at room temperature during 1 h. Resulting mixture was neutralized with 32% NH3 (aq) under ice-bath until pH was basic. Mixture was partitioned between DCM (3×15 mL) and water (15 mL). Organic phase was separated, dried over magnesium sulfate and concentrated. Residue was purified by preparative HPLC using SUNFIRE column (C18, 3.5 μm, 19×150 mm) and linear gradient 25% to 75% water (0.1% HCOOH)—(0.1% HCOOH). Appropriate fractions were collected to give 1-[5-({1-[(3,5-difluoro-2-pyridinyl)methyl]-1H-pyrazol-3-yl}amino)-1,3,4-thiadiazol-2-yl]-1-(4-methyl-1,3-thiazol-2-yl)ethanol (50 mg, 0.109 mmol, 30.0% yield) as a white solid. 1H NMR (400 MHz, DMSO-d6) δ ppm: 10.83 (s, 1H), 8.46 (d, 1H), 7.93-7.98 (m, 1H), 7.74 (d, 1H), 7.27 (s, 1H), 7.21 (m, 1H), 5.96 (d, 1H), 5.37 (d, 2H), 2.29 (d, 3H), 1.97 (s, 1H). [ES+MS] m/z 436 (MH+).

Provenance & Evidence