The mechanism of the Soai reaction has been thoroughly investigated at the M05-2X/6-31G(d) level of theory, by considering ten energetically distinct paths. The study indicates the fully enantioselective catalytic cycle of the homochiral dimers to be the dominant mechanism. Two other catalytic cycles are shown to both be important for correct understanding of the Soai reaction. These are the catalytic cycle of the heterochiral dimer and the non-enantioselective catalytic cycle of the homochiral dimers. The former has been proved to be not really competitive with the principal cycle, as required for the Soai reaction to manifest chiral amplification, whereas the latter, which is only slightly competitive with the principal one, nicely explains the experimental enantioselectivity observed in the reaction of 2-methylpyrimidine-5-carbaldehyde. The study has also evidenced the inadequacy of the B3LYP functional for mechanistic investigations of the Soai reaction.
Schiaffino, L., & Ercolani, G. (2010). Mechanism of the Asymmetric Autocatalytic Soai Reaction Studied by Density Functional Theory. CHEMISTRY-A EUROPEAN JOURNAL, 16(10), 3147-3156 [10.1002/chem.200902543].
|Tipologia:||Articolo su rivista|
|Citazione:||Schiaffino, L., & Ercolani, G. (2010). Mechanism of the Asymmetric Autocatalytic Soai Reaction Studied by Density Functional Theory. CHEMISTRY-A EUROPEAN JOURNAL, 16(10), 3147-3156 [10.1002/chem.200902543].|
|IF:||Con Impact Factor ISI|
|Settore Scientifico Disciplinare:||Settore CHIM/06 - Chimica Organica|
|Revisione (peer review):||Sì, ma tipo non specificato|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1002/chem.200902543|
|Stato di pubblicazione:||Pubblicato|
|Data di pubblicazione:||8-mar-2010|
|Titolo:||Mechanism of the Asymmetric Autocatalytic Soai Reaction Studied by Density Functional Theory|
|Autori:||Schiaffino, L; Ercolani, G|
|Appare nelle tipologie:||01 - Articolo su rivista|