Diisopropylethylamine → HCID 178523077, compound

Participants

Reaction Steps

To a solution of 5-(2-chloro-5-(3-fluoropyridin-2-yl)benzamido)-1-phenyl-1H-pyrazole-3-carboxylic acid (Example 105, 200 mg, 0.458 mmol), (1H-1,2,3-triazol-4-yl)methanamine (74 mg, 0.549 mmol) and N,N-diisopropylethylamine (406 μL, 2.29 mmol) in dichloromethane (3 mL) and N,N-dimethylformamide (1 mL) was added HATU (261 mg, 0.687 mmol). The reaction was stirred at room temperature for 2 hours. Further HATU (87 mg, 0.229 mmol) was added and the reaction continued for 3 hours. The reaction solution was partitioned between water (10 mL) and ethyl acetate (10 mL). The aqueous layer was further extracted with ethyl acetate (2×10 mL), and the combined organic layers were washed with brine (20 mL), dried over magnesium sulphate and concentrated in vacuo. The residue was purified by elution through an SCX-2 column using MeOH followed by 7N NH3 in MeOH followed by silica gel column chromatography eluting with 1% NH3(aq) and 8% MeOH in DCM to afford the title compound as white solid (51 mg, 21%).

Provenance & Evidence