4-Formylbenzoic acid → HCID 68385262, compound

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Reaction Steps

To a solution of 2,2,2-trifluoro-N-(trans-2-phenylcyclopropyl)-N-(2-(piperidin-4-yl)ethyl)acetamide (126 mg, 0.370 mmol) in 1,2-dichloroethane (DCE) (2 mL) were added 4-formylbenzoic acid (66.7 mg, 0.444 mmol) and sodium triacetoxyborohydride (157 mg, 0.740 mmol), and the mixture was stirred at room temperature for 18 h. The mixture was quenched with water (2 mL) and extracted with DCM (3×). The extract was dried (Na2SO4) and concentrated. The residue was dissolved into methanol (2 ml) and 1N NaOH aqueous solution (2 mL) was added. The mixture was stirred at room temperature for 1 h and concentrated. The residue was treated with MeOH (3 mL) and filtered. The filtrate was purified using reverse-phase HPLC under the acidic conditions. The resulting TFA salt of the product was treated with 1N HCl and concentrated. The residue was further dried under vacuum to give 87 mg of product as white solid (HCl salt). MS: (M+H)+=379.4. 1H NMR (400 MHz, DMSO-d6) δ ppm 1.25 (q, 1H), 1.46-1.67 (m, 5H), 1.82 (br. s., 2H), 2.87 (br. s., 3H), 3.05 (br. s., 2H), 3.30 (br. s., 2H), 4.34 (d, J=3.79 Hz, 2H), 7.10-7.40 (m, 5H), 7.74 (d, J=8.08 Hz, 2H), 8.00 (d, J=7.83 Hz, 2H), 9.53 (br. s., 2H).

Provenance & Evidence