Catalytic asymmetric Si-O coupling of simple achiral silanes and chiral donor-functionalized alcohols
"Chemical Equation Presented" Biomimetic and efficient: Mixed calcium manganese(III) oxides (see structure; Ca green, Mn red, O white) with elemental compositions and structures mimicking the active site of photosystem II were found to be highly active catalysts for the oxidation of water to molecular oxygen. As for PSII, the presence of Ca2+ greatly enhances the catalyst performance in comparison to the related manganeseonly system Mn2O3.
Weickgenannt, Andreas,Mewald, Marius,Muesmann, Thomas W. T.,Oestreich, Martin
supporting information; experimental part
p. 2223 - 2226
(2010/06/19)
Chiral recognition with silicon-stereogenic silanes: Remarkable selectivity factors in the kinetic resolution of donor-functionalized alcohols
(Chemical Equation Presented) Slick silicon: A low-molecular-weight silane (C13H20Si, 204.38 g mol-1) with silicon-centered chirality is capable of discriminating enantiomeric rhodium-substrate complexes in dehydrogenative Si-O coupling reactions with outstanding selectivity factors (see scheme, s = selectivity factor).
Klare, Hendrik F. T.,Oestreich, Martin
p. 9335 - 9338
(2008/12/21)
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