Source:http://linkedlifedata.com/resource/pubmed/id/11678676
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
22
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| pubmed:dateCreated |
2001-10-26
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| pubmed:abstractText |
[structure: see text]. In the stoichiometric asymmetric epoxidation of E-beta-methylstyrene with cationic chromium-salen oxo complexes, enantioselectivity is increased by halo-substitution at the 3,3'- and 6,6'-positions and decreased at the 4,4'- and 5,5'-positions on the salen rings. Addition of triphenylphosphine oxide significantly increases selection with 3,3'- or 5,5'-substituents but not with 4,4'- or 6,6'-substituents. Use of nitrate counterion is beneficial in most cases. The results are discussed with respect to the mode of stereoselection in metal-salen epoxidations.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Nov
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| pubmed:issn |
1523-7060
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| pubmed:author | |
| pubmed:issnType |
Print
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| pubmed:day |
1
|
| pubmed:volume |
3
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
3435-8
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| pubmed:dateRevised |
2003-10-31
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| pubmed:year |
2001
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| pubmed:articleTitle |
Asymmetric alkene epoxidation with chromium oxo salen complexes. A systematic study of salen ligand substituents.
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| pubmed:affiliation |
Chemistry Department and Conway Institute of Biomolecular and Biomedical Sciences, University College Dublin, Belfield, Dublin 4, Ireland.
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| pubmed:publicationType |
Journal Article
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