Lipase-catalyzed second-order asymmetric transformations as resolution and synthesis strategies for chiral 5-(acyloxy)-2(5H)-furanone and pyrrolinone synthons
By use of lipase R (Amano, Penicillium roqueforti) immobilized on Hyflo Super Cell it is possible to convert at ambient temperature 5-hydroxy-5H-furan-2-one (5) to acetic acid 5-oxo-2,5-dihydrofuran-2-yl ester (1b) by acylation with vinyl acetate in 1:1 cyclohexane-butyl acetate. At 90% conversion t...
Published in: | Journal of the American Chemical Society |
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1996
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Online Access: | https://hdl.handle.net/11370/f86bde2b-8a27-46e3-be52-34551b9b0f10 https://research.rug.nl/en/publications/f86bde2b-8a27-46e3-be52-34551b9b0f10 https://doi.org/10.1021/ja953812h https://pure.rug.nl/ws/files/3621819/1996JAmChemSocvdDeenSupp.pdf https://pure.rug.nl/ws/files/3621820/1996JAmChemSocvdDeen.pdf |
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ftunigroningenpu:oai:pure.rug.nl:publications/f86bde2b-8a27-46e3-be52-34551b9b0f10 2024-06-02T07:57:23+00:00 Lipase-catalyzed second-order asymmetric transformations as resolution and synthesis strategies for chiral 5-(acyloxy)-2(5H)-furanone and pyrrolinone synthons vanderDeen, H Cuiper, AD Hof, RP vanOeveren, A Feringa, BL Kellogg, RM 1996-04-24 application/pdf https://hdl.handle.net/11370/f86bde2b-8a27-46e3-be52-34551b9b0f10 https://research.rug.nl/en/publications/f86bde2b-8a27-46e3-be52-34551b9b0f10 https://doi.org/10.1021/ja953812h https://pure.rug.nl/ws/files/3621819/1996JAmChemSocvdDeenSupp.pdf https://pure.rug.nl/ws/files/3621820/1996JAmChemSocvdDeen.pdf eng eng https://research.rug.nl/en/publications/f86bde2b-8a27-46e3-be52-34551b9b0f10 info:eu-repo/semantics/openAccess vanderDeen , H , Cuiper , AD , Hof , RP , vanOeveren , A , Feringa , BL & Kellogg , RM 1996 , ' Lipase-catalyzed second-order asymmetric transformations as resolution and synthesis strategies for chiral 5-(acyloxy)-2(5H)-furanone and pyrrolinone synthons ' , Journal of the American Chemical Society , vol. 118 , no. 16 , pp. 3801-3803 . https://doi.org/10.1021/ja953812h INSITU RACEMIZATION article 1996 ftunigroningenpu https://doi.org/10.1021/ja953812h 2024-05-07T17:49:28Z By use of lipase R (Amano, Penicillium roqueforti) immobilized on Hyflo Super Cell it is possible to convert at ambient temperature 5-hydroxy-5H-furan-2-one (5) to acetic acid 5-oxo-2,5-dihydrofuran-2-yl ester (1b) by acylation with vinyl acetate in 1:1 cyclohexane-butyl acetate. At 90% conversion the enantiomeric excess of 1b is 100%. This is an example of an enzyme-catalyzed second-order transformation whereby the unreactive enantiomer of 5 racemizes during reaction, allowing up to 100% conversion and obtainment of high enantiomeric excesses. The method is even more effective with 5-(acyloxy)-2(5H)-pyrrolinones. Racemic acetic acid 1-acetyl-5-oxo-2,5-dihydro-1H-pyrrol-2-yl ester (2) when treated with the lipase from Candida antarctica at ambient temperature in 3:1 n-hexane-butanol undergoes exactly 50% conversion to afford (+)-2 in >99% enantiomeric excess. This is the unreactive enantiomer. The (-)-enantiomer is converted to the 5-hydroxy derivative 6, which with Candida antarctica in 1:1 n-hexane-vinyl acetate at 69 degrees C (the temperature is higher to increase the rate of racemization) is transformed (100% conversion) to (-)-2, obtained in >99% enantiomeric excess. The scope of these second-order asymmetric transformations is discussed as well as procedures for optimalization of reaction conditions whereby transesterification strategies are combined with those of second-order asymmetric transformation. Article in Journal/Newspaper Antarc* Antarctica University of Groningen research database Journal of the American Chemical Society 118 16 3801 3803 |
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University of Groningen research database |
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ftunigroningenpu |
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English |
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INSITU RACEMIZATION |
spellingShingle |
INSITU RACEMIZATION vanderDeen, H Cuiper, AD Hof, RP vanOeveren, A Feringa, BL Kellogg, RM Lipase-catalyzed second-order asymmetric transformations as resolution and synthesis strategies for chiral 5-(acyloxy)-2(5H)-furanone and pyrrolinone synthons |
topic_facet |
INSITU RACEMIZATION |
description |
By use of lipase R (Amano, Penicillium roqueforti) immobilized on Hyflo Super Cell it is possible to convert at ambient temperature 5-hydroxy-5H-furan-2-one (5) to acetic acid 5-oxo-2,5-dihydrofuran-2-yl ester (1b) by acylation with vinyl acetate in 1:1 cyclohexane-butyl acetate. At 90% conversion the enantiomeric excess of 1b is 100%. This is an example of an enzyme-catalyzed second-order transformation whereby the unreactive enantiomer of 5 racemizes during reaction, allowing up to 100% conversion and obtainment of high enantiomeric excesses. The method is even more effective with 5-(acyloxy)-2(5H)-pyrrolinones. Racemic acetic acid 1-acetyl-5-oxo-2,5-dihydro-1H-pyrrol-2-yl ester (2) when treated with the lipase from Candida antarctica at ambient temperature in 3:1 n-hexane-butanol undergoes exactly 50% conversion to afford (+)-2 in >99% enantiomeric excess. This is the unreactive enantiomer. The (-)-enantiomer is converted to the 5-hydroxy derivative 6, which with Candida antarctica in 1:1 n-hexane-vinyl acetate at 69 degrees C (the temperature is higher to increase the rate of racemization) is transformed (100% conversion) to (-)-2, obtained in >99% enantiomeric excess. The scope of these second-order asymmetric transformations is discussed as well as procedures for optimalization of reaction conditions whereby transesterification strategies are combined with those of second-order asymmetric transformation. |
format |
Article in Journal/Newspaper |
author |
vanderDeen, H Cuiper, AD Hof, RP vanOeveren, A Feringa, BL Kellogg, RM |
author_facet |
vanderDeen, H Cuiper, AD Hof, RP vanOeveren, A Feringa, BL Kellogg, RM |
author_sort |
vanderDeen, H |
title |
Lipase-catalyzed second-order asymmetric transformations as resolution and synthesis strategies for chiral 5-(acyloxy)-2(5H)-furanone and pyrrolinone synthons |
title_short |
Lipase-catalyzed second-order asymmetric transformations as resolution and synthesis strategies for chiral 5-(acyloxy)-2(5H)-furanone and pyrrolinone synthons |
title_full |
Lipase-catalyzed second-order asymmetric transformations as resolution and synthesis strategies for chiral 5-(acyloxy)-2(5H)-furanone and pyrrolinone synthons |
title_fullStr |
Lipase-catalyzed second-order asymmetric transformations as resolution and synthesis strategies for chiral 5-(acyloxy)-2(5H)-furanone and pyrrolinone synthons |
title_full_unstemmed |
Lipase-catalyzed second-order asymmetric transformations as resolution and synthesis strategies for chiral 5-(acyloxy)-2(5H)-furanone and pyrrolinone synthons |
title_sort |
lipase-catalyzed second-order asymmetric transformations as resolution and synthesis strategies for chiral 5-(acyloxy)-2(5h)-furanone and pyrrolinone synthons |
publishDate |
1996 |
url |
https://hdl.handle.net/11370/f86bde2b-8a27-46e3-be52-34551b9b0f10 https://research.rug.nl/en/publications/f86bde2b-8a27-46e3-be52-34551b9b0f10 https://doi.org/10.1021/ja953812h https://pure.rug.nl/ws/files/3621819/1996JAmChemSocvdDeenSupp.pdf https://pure.rug.nl/ws/files/3621820/1996JAmChemSocvdDeen.pdf |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
vanderDeen , H , Cuiper , AD , Hof , RP , vanOeveren , A , Feringa , BL & Kellogg , RM 1996 , ' Lipase-catalyzed second-order asymmetric transformations as resolution and synthesis strategies for chiral 5-(acyloxy)-2(5H)-furanone and pyrrolinone synthons ' , Journal of the American Chemical Society , vol. 118 , no. 16 , pp. 3801-3803 . https://doi.org/10.1021/ja953812h |
op_relation |
https://research.rug.nl/en/publications/f86bde2b-8a27-46e3-be52-34551b9b0f10 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1021/ja953812h |
container_title |
Journal of the American Chemical Society |
container_volume |
118 |
container_issue |
16 |
container_start_page |
3801 |
op_container_end_page |
3803 |
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1800740529342775296 |