Triethylamine → HCID 178467494, compound

Participants

Reaction Steps

To a round-bottom flask was added a solution of 4-(1-(5-(5-ethoxy-4H-1,2,4-triazol-3-yl)-2,4-diethylbenzoyl)piperidin-4-yl)benzamide (compound 204.9, 100 mg, 0.170 mmol, 1.00 equiv) in dichloromethane (10 mL). Triethylamine (170 mg, 1.68 mmol, 8.00 equiv) was added to the reaction at room temperature, followed by dropwise addition of a solution of (CF3CO)2O (160 mg, 0.760 mmol, 4.50 equiv) in dichloromethane (0.5 mL) at 0 to 5° C. The resulting solution was stirred at room temperature for another 2 hours. The mixture was diluted with 60 mL of ethyl acetate, then washed with 3×20 mL of brine. The organic layer was dried over anhydrous sodium sulfate, and concentrated in vacuo. The residue was purified by prep-HPLC (SunFire Prep C18, 19*150 mm 5 um, water with 0.05% TFA and CH3CN (53.0% CH3CN up to 65.0% in 8 min, up to 100.0% in 2 min, down to 53.0% in 1 min). The fractions containing pure compound were combined and lyophilized to yield 50 mg (50%) of the title compound as a white solid. m/z (ES+) 458 (M+H)+. 1H NMR (300 MHz, CD3OD): δ 7.63 (d, 2H), 7.45-7.30 (m, 4H), 4.89-4.80 (m, 1H, overlapped), 4.36 (q, 2H), 3.60-3.57 (m, 1H), 3.29-3.23 (m, 1H), 3.19-2.85 (m, 4H), 2.74-2.56 (m, 2H), 2.00-1.82 (m, 1H), 1.77-1.66 (m, 3H), 1.40 (t, 3H), 1.30-1.21 (m, 3H), 1.11 (t, 3H).

Provenance & Evidence