UREA OR CARBAMATE DERIVATIVES OF CROWN ETHERS AND SILICON USEFUL FOR THE PREPARATION OF SUPPORTS FOR CHROMATOGRAPHIC SEPARATION OF METAL CATIONS AND ORGANIC MOLECULES COMPRISING AN AMINO FUNCTION

摘要

The invention relates to urea or carbamate derivatives of crown ethers and silicon of formula (I). Said derivatives can be grafted onto a silica gel to produce supports for chromatographic separation of cations or molecules with an amino function such as amino acids.