l-Proline in ionic liquid was employed for Michael addition of ketones to nitrostyrene. Optically active γ-nitroketones were obtained in good yields up to 80%. The reaction offers high syn selectivity (90%). The most striking feature is that the ionic liquid has been found to enhance the enantioselectivity, wherein enantiomeric excess approaches 75%. The system of ionic liquid and catalyst has proved to be an efficient recyclable medium.