Polymer-supported (Salen)Mn catalysts for asymmetric epoxidation: A comparison between soluble and insoluble matrices

Journal of the American Chemical Society

Volumn 122, Issue 29, 2000, Pages 6929-6934

  Reger, Thomas S ^a   Janda, Kim D ^a  

^a SCRIPPS RESEARCH INSTITUTE   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

GLUTARIC ACID; MACROGOL; POLYMER; STYRENE;

ARTICLE; CATALYST; CHEMICAL REACTION; CHIRALITY; CROSS LINKING; ENANTIOMER; EPOXIDATION;

EID: 0034718088     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja000692r     Document Type: Article

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41. To further analyze the degradation of this system, a control experiment was run in which the reaction mixture, after filtration of the polymeric catalyst, was reused without the addition of fresh catalyst. Further formation of epoxide products would indicate that the salen catalyst was cleaved 'intact from the resin while the absence of additional epoxide formation would be indicative of manganese leaching and/or ligand decomposition. It was found that recycling of the crude reaction did not lead to the formation of additional epoxide product.