2 below, is an example of the same) have been found to be very effective in asymmetric organocatalysis. These systems are known to work though the stabilization of the electrophile and nucleophile through non-covalent interactions, which is the basis of the two standard mechanisms: a) the Wynberg ion-pair hydrogen bonding model and b) the Houk-Grayson hydrogen bonding model, which have been invoked to explain their activity. Our computational studies show that cinchona alkaloid stabilizes the substrates in the fashion of the Wynberg The asymmetric nitroaldol reaction of α-ketophosphonates, using phenol and nitro substituted derivatives of phenol as additives, reported by Feng and coworkers, has also been considered.