Catalytic Asymmetric Dihydroxylation Using Phenoxyethoxymethyl-polystyrene (PEM)-Based Novel Microencapsulated Osmium Tetroxide (PEM-MC OsO4)

A phenoxyethoxymethyl-polystyrene (PEM)-based novel polymer-supported osmium catalyst has been developed. The catalyst was readily prepared from PEM polymer based on a microencapsulation technique, and asymmetric dihydroxylation of olefins has been successfully performed using (DHQD)2PHAL as a chira...

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Bibliographic Details
Published inOrganic letters Vol. 3; no. 17; pp. 2649 - 2652
Main Authors Kobayashi, Shū, Ishida, Tasuku, Akiyama, Ryo
Format Journal Article
LanguageEnglish
Published WASHINGTON American Chemical Society 23.08.2001
Amer Chemical Soc
Subjects
Chemistry
Chemistry, Organic
Physical Sciences
Science & Technology
ACYLHYDRAZONES
BENZYLOXYBENZYLAMINE BOBA RESIN
VANCOMYCIN AGLYCON
ACID
ENANTIOSELECTIVE SYNTHESIS
TETRAOXIDE
MANNICH-TYPE REACTIONS
CONSTRUCTION
ACETOGENINS
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Summary:A phenoxyethoxymethyl-polystyrene (PEM)-based novel polymer-supported osmium catalyst has been developed. The catalyst was readily prepared from PEM polymer based on a microencapsulation technique, and asymmetric dihydroxylation of olefins has been successfully performed using (DHQD)2PHAL as a chiral ligand and K3Fe(CN)6 as a cooxidant in H2O/acetone. The catalyst was recovered quantitativery by simple filtration and reused without loss of activity several times.
Bibliography:ObjectType-Article-1
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ISSN:1523-7060
1523-7052
DOI:10.1021/ol0161965