Like quaternary amines, they can also be used as phase transfer catalysts in liquid-liquid extractions, and Huang used a mixture of one of these compounds and cyclodextrin to separate primary amines via capillary electrophoresis.
Like quaternary amines, they can also be used as phase transfer catalysts in liquid-liquid extractions, and Huang used a mixture of one of these compounds and cyclodextrin to separate primary amines via capillary electrophoresis. Polyglymes are a linear version of them, and three- dimensional ones are called cryptands, which are often used as ionophores. Charles Pederson first synthesized them by linking several catechols together, and isolated a product that could complex with potassium ions. Dioxane is the simplest example of, FTP, this type of macrocycle composed of repeating ethyleneoxy units, a special type of ether.
Like quaternary amines, they can also be used as phase transfer catalysts in liquid-liquid extractions, and Huang used a mixture of one of these compounds and cyclodextrin to separate primary amines via capillary electrophoresis.
{Crown Ethers}