Development of dynamic kinetic resolution on large scale for (±)-1-phenylethylamine
Candida antarctica lipase B (CALB) and racemization catalyst 4 were combined in the dynamic kinetic resolution (DKR) of (±)-1-phenylethylamine (1). Several reaction parameters have been investigated to modify the method for application on multigram scale. A comparison of isopropyl acetate and alkyl...
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ftpubmed:oai:pubmedcentral.nih.gov:2956483 2023-05-15T13:50:27+02:00 Development of dynamic kinetic resolution on large scale for (±)-1-phenylethylamine Thalén, Lisa K Bäckvall, Jan-E 2010-09-13 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2956483 http://www.ncbi.nlm.nih.gov/pubmed/20978623 https://doi.org/10.3762/bjoc.6.97 en eng Beilstein-Institut http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2956483 http://www.ncbi.nlm.nih.gov/pubmed/20978623 http://dx.doi.org/10.3762/bjoc.6.97 Copyright © 2010, Thalén and Bäckvall; licensee Beilstein-Institut. http://www.beilstein-journals.org/bjoc This is an Open Access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The license is subject to the Beilstein Journal of Organic Chemistry terms and conditions: (http://www.beilstein-journals.org/bjoc) CC-BY Full Research Paper Text 2010 ftpubmed https://doi.org/10.3762/bjoc.6.97 2013-09-03T05:55:56Z Candida antarctica lipase B (CALB) and racemization catalyst 4 were combined in the dynamic kinetic resolution (DKR) of (±)-1-phenylethylamine (1). Several reaction parameters have been investigated to modify the method for application on multigram scale. A comparison of isopropyl acetate and alkyl methoxyacetates as acyl donors was carried out. It was found that lower catalyst loadings could be used to obtain (R)-2-methoxy-N-(1-phenylethyl)acetamide (3) in good yield and high ee when alkyl methoxyacetates were used as acyl donors compared to when isopropyl acetate was used as the acyl donor. The catalyst loading could be decreased to 1.25 mol % Ru-catalyst 4 and 10 mg CALB per mmol 1 when alkyl methoxyacetates were used as the acyl donor. Text Antarc* Antarctica PubMed Central (PMC) Beilstein Journal of Organic Chemistry 6 823 829 |
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Full Research Paper |
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Full Research Paper Thalén, Lisa K Bäckvall, Jan-E Development of dynamic kinetic resolution on large scale for (±)-1-phenylethylamine |
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Full Research Paper |
description |
Candida antarctica lipase B (CALB) and racemization catalyst 4 were combined in the dynamic kinetic resolution (DKR) of (±)-1-phenylethylamine (1). Several reaction parameters have been investigated to modify the method for application on multigram scale. A comparison of isopropyl acetate and alkyl methoxyacetates as acyl donors was carried out. It was found that lower catalyst loadings could be used to obtain (R)-2-methoxy-N-(1-phenylethyl)acetamide (3) in good yield and high ee when alkyl methoxyacetates were used as acyl donors compared to when isopropyl acetate was used as the acyl donor. The catalyst loading could be decreased to 1.25 mol % Ru-catalyst 4 and 10 mg CALB per mmol 1 when alkyl methoxyacetates were used as the acyl donor. |
format |
Text |
author |
Thalén, Lisa K Bäckvall, Jan-E |
author_facet |
Thalén, Lisa K Bäckvall, Jan-E |
author_sort |
Thalén, Lisa K |
title |
Development of dynamic kinetic resolution on large scale for (±)-1-phenylethylamine |
title_short |
Development of dynamic kinetic resolution on large scale for (±)-1-phenylethylamine |
title_full |
Development of dynamic kinetic resolution on large scale for (±)-1-phenylethylamine |
title_fullStr |
Development of dynamic kinetic resolution on large scale for (±)-1-phenylethylamine |
title_full_unstemmed |
Development of dynamic kinetic resolution on large scale for (±)-1-phenylethylamine |
title_sort |
development of dynamic kinetic resolution on large scale for (±)-1-phenylethylamine |
publisher |
Beilstein-Institut |
publishDate |
2010 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2956483 http://www.ncbi.nlm.nih.gov/pubmed/20978623 https://doi.org/10.3762/bjoc.6.97 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2956483 http://www.ncbi.nlm.nih.gov/pubmed/20978623 http://dx.doi.org/10.3762/bjoc.6.97 |
op_rights |
Copyright © 2010, Thalén and Bäckvall; licensee Beilstein-Institut. http://www.beilstein-journals.org/bjoc This is an Open Access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The license is subject to the Beilstein Journal of Organic Chemistry terms and conditions: (http://www.beilstein-journals.org/bjoc) |
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CC-BY |
op_doi |
https://doi.org/10.3762/bjoc.6.97 |
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Beilstein Journal of Organic Chemistry |
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6 |
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823 |
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829 |
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