Triethylamine → N-(1-benzyl-piperidin-4-yl)-2-methoxy-6-nitrobenzamide

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2-Methoxy-6-nitro-benzoic acid (2.0 g, 10.1 mmol), 4-amino-1-benzylpiperidine (1.9 mL, 10.1 mmol), 1-hydroxybenzotriazole (1.43 g, 10.5 mmol) and 1-(3-dimethylaminopropyl)-3-ethyl carbodiimide (1.9 g, 10.1 mmol) were combined in ethyl acetate (25 mL). To this solution was added triethylamine (4.2 mL. 30.3 mmol) and the reaction mixture stirred at 40° C. for 2 h. After cooling to room temperature, the mixture was diluted with ethyl acetate and washed with water (2×), 5% sodium bicarbonate, brine (2×), dried over sodium sulfate, and concentrated to afford 3.2 g (86%) of the desired product. LC/MS: tR=1.10 min, 370.28 (MH)+.

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