Alloxazine-cyclodextrin conjugates for organocatalytic enantioselective sulfoxidations

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F11%3A00367200" target="_blank" >RIV/61388963:_____/11:00367200 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22310/11:43892806
Result on the web
<a href="http://dx.doi.org/10.1039/c1ob05934c" target="_blank" >http://dx.doi.org/10.1039/c1ob05934c</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/c1ob05934c" target="_blank" >10.1039/c1ob05934c</a>

Result language
angličtina
Original language name
Alloxazine-cyclodextrin conjugates for organocatalytic enantioselective sulfoxidations
Original language description
Four structurally different alloxazine?cyclodextrin conjugates were prepared and tested as catalysts for the enantioselective oxidation of prochiral sulfides to sulfoxides by hydrogen peroxide in aqueous solutions. Alpha-cyclodextrin conjugate having alloxazinium unit attached via a short linker proved to be a suitable catalyst for oxidations of n-alkyl methyl sulfides, displaying conversions up to 98% and enantioselectivities up to 77% ee. Beta-cyclodextrin conjugates were optimal catalysts for the oxidation of sulfides carrying bulkier substituents; e.g. tert-butyl methyl sulfide was oxidized with quantitative conversion and 91% ee. Low loadings (0.3?5 mol%) of the catalysts were used.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CC - Organic chemistry
OECD FORD branch
—

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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