intermediate, were used as chiral organocatalysts in asymmetricMichaeladditionreactions of aldehydes to nitroolefins. These proline-like catalysts are unique for their rigid bicyclic structure with two H atoms attached to the bridgehead C atoms lying on the opposite side of the ring. They therefore showed high efficiency in asymmetricMichaeladditions of aldehydes to nitroolefins. Under the optimal conditions