Reaction #471740

Reaction equation

Diethyl acetylmalonate

gabapentin

piperidine

→

title compound

Piperidinium 1-{(1-Methyl-2-(Ethoxycarbonyl)-3-Ethoxy-3-Oxoprop-1-enyl)aminomethyl}-1-Cyclohexane Acetate

Solvents

ethanol

Conditions

Workup

1. 1
   TemperatureAfter heating
2. 2
   Temperatureunder reflux for 16 h
3. 3
   Otherthe solvent was removed under reduced pressure

Procedure

Diethyl acetylmalonate (202 mg, 1 mmol), gabapentin (171 mg, 1 mmol), and piperidine (99 μL, 1 mmol) were mixed in anhydrous ethanol (10 mL). After heating under reflux for 16 h, the solvent was removed under reduced pressure to give the title compound with purity greater than 90%. 1H NMR (CDCl3, 400 MHz): δ 1.28 (t, J=7.2 Hz, 6H), 1.38-1.64 (m, 12H), 1.75 (m, 4H), 1.96 (s, 3H), 2.23 (s, 2H), 2.99 (m, 4H), 3.24 (d, J=5.2 Hz, 2H), 4.20 (q, J=7.2 Hz, 4H), 4.35 (s, br, 2H), 7.79 (t, J =5.2 Hz, 1H). MS (ESI) m/z 354.38 (M−H−).

Source