Diisopropylethylamine → 4-methyl-N-(1-phenylcyclopropyl)-3-(pyridazin-4-yl)benzamide

Participants

Reaction Steps

To a solution containing 2-phenylcyclopropanamine hydrochloride (0.13 g, 0.76 mmol), diisopropylethylamine (0.88 mL, 5.0 mmol), 4-methyl-3-(pyridazin-4-yl)benzoic acid (0.14 g, 0.63 mmol) and DMF (4.2 mL) was added HATU (0.48 g, 1.3 mmol) in one portion. The solution was maintained at room temperature for 40 min. and concentrated to a residue. The residue thus obtained was purified on silica gel (0-8% methanol/dichloromethane, 45 min gradient) to afford 4-methyl-N-(1-phenylcyclopropyl)-3-(pyridazin-4-yl)benzamide. 1H NMR (500 MHz, CHLOROFORM-d) δ ppm 9.22-9.28 (m, 1 H), 9.18 (d, J=1.22 Hz, 1 H), 7.75-7.85 (m, 1 H), 7.70 (d, J=1.83 Hz, 1 H), 7.51 (dd, J=5.19, 2.44 Hz, 1 H), 7.37-7.42 (m, 1 H), 7.23-7.33 (m, 5 H), 7.15-7.21 (m, 2 H), 3.70 (dt, J=13.12, 6.56 Hz, 3 H), 3.17 (q, J=7.32 Hz, 3 H), 2.30-2.40 (m, 3 H). LCMS retention time: 1.655 min. LC data was recorded on a Shimadzu LC-10AS liquid chromatograph equipped with a Sunfire C18, 5 micron, C18, 4.6×50 mm column using a SPD-10AV UV-Vis detector at a detector wave length of 220 nM. The elution conditions employed a flow rate of 4 mL/min, a gradient of 100% solvent A/0% solvent B to 0% solvent A/100% solvent B, a gradient time of 3 min, a hold time of 1 min, and an analysis time of 4 min where solvent A was 10% CH3CN/90% H2O/10 mM TFA and solvent B was 10% H2O/90% CH3CN/10 mM TFA. MS data was determined using a Micromass Platform for LC in electrospray mode. m/z 330 (MH+).

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