Stereoselective Alcohol Silylation by Dehydrogenative Si-O Coupling: Scope, Limitations, and Mechanism of the Cu-H-Catalyzed Non-Enzymatic Kinetic Resolution with Silicon-Stereogenic Silanes
silanes-a process that was found to proceed without racemization at the siliconatom if asymmetrically substituted. The present investigation starts from this pivotal observation since silicon-stereogenic silanes are thereby suitable for the reagent-controlled kinetic resolution of racemic alcohols, in which asymmetry at the siliconatom enables discrimination of enantiomeric alcohols. In this full account
B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>-Catalyzed Reduction of Ketones and Imines Using Silicon-Stereogenic Silanes: Stereoinduction by Single-Point Binding
作者:Daniel T. Hog、Martin Oestreich
DOI:10.1002/ejoc.200900796
日期:2009.10
silane as astereochemical probe to clarify the mechanism of the B(C6F5)3-catalyzed hydrosilylation of ketones. When using a prochiral ketone, reasonable stereoinduction was seen, originating from the stereogenicity at the silicon atom, a chiralitytransferfromsilicon to carbon through single-point binding of the chiral silane to the carbonyl oxygen atom. In the present investigation, we further elaborated
Enantio- and Diastereotopos Differentiation in the Palladium(II)-Catalyzed Hydrosilylation of Bicyclo[2.2.1]alkene Scaffolds with Silicon-Stereogenic Silanes
The palladium(II)-catalyzed hydrosilylation of meso-configured bicyclo[2.2.1]alkene scaffolds proved to be an invaluable model reaction for the development of reagent-controlled asymmetric transformations based on silicon-stereogenic silanes as stereoinducers. In the present investigation, the subtle structural requirements of the silane substitution pattern in enantiotopos-differentiating single hydrosilylations
Conclusive Evidence for an S<sub>N</sub>2-Si Mechanism in the B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>-Catalyzed Hydrosilylation of Carbonyl Compounds: Implications for the Related Hydrogenation
作者:Sebastian Rendler、Martin Oestreich
DOI:10.1002/anie.200801675
日期:2008.7.28
Insight into the Mechanism of Carbonyl Hydrosilylation Catalyzed by Brookhart’s Cationic Iridium(III) Pincer Complex
作者:Toni T. Metsänen、Peter Hrobárik、Hendrik F. T. Klare、Martin Kaupp、Martin Oestreich
DOI:10.1021/ja503254f
日期:2014.5.14
carbonyl hydrosilylation catalyzed by the iridium(III) pincer complex introduced by Brookhart. Employing silicon-stereogenic silanes as a stereochemical probe results in racemization rather than inversion of the configuration at the silicon atom. The degree of the racemization is, however, affected by the silane/carbonyl compound ratio, and inversion is seen with excess silane. Independently preparing