1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → HCID 58732681, compound

Participants

Reaction Steps

A round bottom flask with magnetic stirrer was charged with 2-methyl-1-(4-trifluoromethyl-benzoyl)-1,2,3,4-tetrahydro-quinoline-4-carboxylic acid (886 mg, 2.44 mmol) in anhydrous pyridine (25.0 mL). To the reaction was added N-ethyl-p-chloroaniline (0.410 mL, 2.95 mmol), followed by EDCI (833 mg, 4.34 mmol). The reaction was stirred at room temperature under an argon atmosphere for 18-20 hours. The reaction was poured into a 1:1 mixture of water/brine (50 mL) and extracted with ethyl acetate (3×35 mL). The combined extractions were washed with brine (1×50 mL), dried over magnesium sulfate, and filtered. The filtrate was concentrated in vacuo to afford a brown residue. The residue was purified via silica gel chromatography (hexanes/ethyl acetate) to yield (±)-trans-2-methyl-1-(4-trifluoromethyl-benzoyl)-1,2,3,4-tetrahydro-quinoline-4-carboxylic acid (4-chloro-phenyl)-ethyl-amide (39%). 1H-NMR (CDCl3) δ: 1.02 (d, 3H), 1.12 (t, 3H), 1.64-1.74 (m, 1H), 2.49-2.58 (m, 1H), 3.59-3.72 (m, 1H), 3.77-3.90 (m, 2H), 5.03-5.14 (m, 1H), 6.35-6.41 (m, 1H), 6.74-6.84 (m, 2H), 6.89-6.95 (m, 1H), 7.17-7.25 (m, 2H), 7.44-7.52 (m, 2H), 7.63-7.69 (m, 2H). MS m/z: 501 (M+1).

Provenance & Evidence