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Comparison of betaine and l -stachydrine as phase-transfer catalysts in Michael addition and Darzens reaction
Veverková, E., Droppová, R. and Toma, Š. Comparison of betaine and l -stachydrine as phase-transfer catalysts in Michael addition and Darzens reaction Chemical Papers, Vol.60, No. 5, 2006, 333-337
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Document type:
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Článok z časopisu / Journal Article |
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Collection:
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Chemical papers
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| Author(s) |
Veverková, E.
Droppová, R.
Toma, Š.
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| Title |
Comparison of betaine and l -stachydrine as phase-transfer catalysts in Michael addition and Darzens reaction
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| Journal name |
Chemical Papers
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| Publication date |
2006
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| Year available |
2006
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| Volume number |
60
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| Issue number |
5
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| ISSN |
0366-6352
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| Start page |
333
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| End page |
337
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| Place of publication |
Poland
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| Publisher |
Versita
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| Collection year |
2006
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| Language |
english
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| Subject |
250000 Chemical Sciences
250300 Organic Chemistry
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| Abstract/Summary |
Betaine and l-stachydrine have been tested as phase-transfer catalysts in Michael and Darzens reactions. The catalytic effect of l-stachydrine was found comparable to that of betaine in Michael addition and even higher when considering Darzens reaction. The desired products have been obtained in higher yields in solid-liquid system than under liquid-liquid bi-phase conditions. The influence of microwave irradiation and ultrasound on the reaction rate has been studied.
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