The first comprehensive mechanistic rationalization of the intriguing autocatalytic behavior of the Soai reaction came from kinetic, spectroscopic, and computational work by the groups of Blackmond and Brown. The simple autocatalytic kinetic model proposed in this work is an extension of the Kagan ML2 and Noyori reservoir 25 models for nonlinear effects in asymmetric catalysis (Scheme 7). In both models, the formation of dimer or higher order species accounts for the nonlinear relationship between the enantiomeric excess of the added and newly formed catalyst/reaction product (thus addressing the second point in Frank's model, that of inhibition). The main difference between the two models lies in which species serves as the active catalyst. In the Kagan model, monomeric species are neglected, and the higher order species themselves serve as the catalyst, while in the Noyori model, higher order species exist as off-cycle inactive reservoirs that are in equilibrium with on-cycle monomeric catalysts. In either model, the monomer/dimer interactions are characterized by equilibrium constants for homochiral (Khomo) and heterochiral (Khetero) dimer formation, which may in turn be written in terms of an overall dimer constant, Kdimer, as shown in Scheme 7. The equilibria between monomers and dimers will influence both the concentration and the enantiomeric excess of the active catalyst, whether monomers or dimers. Nonlinearity is possible when unequal partitioning between monomer and dimer species occurs, as dictated by the equilibrium constants.