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Enzymatic chemoselective synthesis of secondary-amide surfactant from N-methylethanol amine
Efficient selective synthesis of the secondary amide surfactant N-methyl lauroylethanolamide from methyl laurate and N-methylethanol amine by carrier-fixed Chirazyme L-2 ( Candida antarctica) using a kinetic strategy has been demonstrated. When different solvents were screened for product yields usi...
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Published in: | Journal of bioscience and bioengineering 2005-12, Vol.100 (6), p.662-666 |
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Main Authors: | , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Efficient selective synthesis of the secondary amide surfactant
N-methyl lauroylethanolamide from methyl laurate and
N-methylethanol amine by carrier-fixed Chirazyme L-2 (
Candida antarctica) using a kinetic strategy has been demonstrated. When different solvents were screened for product yields using Chirazyme L-2, acetonitrile was found to be optimal. The rate of the reaction increased sharply by increasing the molar ratio of the reactants and the reaction temperature. When the reaction was performed at 50°C for 36 h with 50 mmol ester and 100 mmol amine, the product was obtained in a 97.1% yield. With 50 mmol ester and 150 mmol amine, the highest yield (97.3%) was obtained after 16 h of incubation at 50°C. It took only 5 h to get a yield of 95.8% at 60°C using 50 mmol ester and 200 mmol amine. The enzyme activity in the amidation reaction mixture did not decrease notably even after six uses. |
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ISSN: | 1389-1723 1347-4421 |
DOI: | 10.1263/jbb.100.662 |