Ureido or carbamate derivatives of crown ethers and of silicon usable for preparing supports intended for the separation by chromatography of metal cations and of organic molecules comprising amine functional groups
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United States of America Patent
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Jun 12, 2007
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Jan 20, 2003
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Jan 23, 2002
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Abstract
The invention relates to ureido or carbamate derivatives of crown ethers and of silicon of formula: ##STR00001## These derivatives can be grafted to silica gel for the purpose of obtaining supports for the chromatographic separation of cations or of molecules comprising amine functional groups, such as amino acids.
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