1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → 4-(1-(3-Amino-4-methylbenzoyl)azepan-4-yl)benzonitrile

Participants

Reaction Steps

To a 4-mL vial was added 3-amino-4-methylbenzoic acid (27 mg, 0.18 mmol, 1.0 equiv), 4-(azepan-4-yl)benzonitrile (compound 40.4, 40 mg, 0.2 mmol, 1.1 equiv), hydroxybenzotriazole (39 mg of 20 wt % H2O, 0.23 mmol, 1.3 equiv), 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (44 mg, 0.23 mmol, 1.3 equiv), DMF (1 mL) and N,N-diisopropylethylamine (93 μL, 0.54 mmol, 3.0 equiv). The mixture was stirred at room temperature for 4 hours then diluted into ethyl acetate (10 mL) and washed with brine (10 mL). The aqueous was extracted with ethyl acetate (3 mL) and the combined organics were washed with brine (10 mL), 1 M NaH2PO4 (5 mL) and brine (10 mL). The organics were dried (Na2SO4), filtered and concentrated to obtain the title compound as a brown solid (45 mg, 74%). m/z (ES+) 334 (M+H)+.

Provenance & Evidence