Examples of 'crown ethers' in a sentence
Meaning of "crown ethers"
crown ethers - These are a family of cyclic chemical compounds known for their ability to selectively bind certain metal ions
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- plural of crown ether
How to use "crown ethers" in a sentence
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crown ethers
Quaternary salts and crown ethers are contemplated.
Crown ethers may be added as catalysts.
The cyclic polyethers include crown ethers.
Suitable crown ethers are known to the skilled person.
Pedersen particularly popularized the dibenzo crown ethers.
Crown ethers have proven to be very suitable ethers.
The polyethers are typically crown ethers or linear polyethers.
Crown ethers bind determined cations strongly so as to form complexes.
The most commonly used macrocycles are crown ethers.
A host of crown ethers are known.
He is best known for describing methods of synthesizing crown ethers.
Crown ethers are known for their ability to strongly solvate cations.
The preferred polyethers are crown ethers and cryptands.
The polymeric crown ethers are disclosed as being useful as a component of electrorheological fluid.
The primary deuterium isotope effect was also unaltered by the presence of crown ethers.
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Cyclic polyethers or crown ethers are known in the literature to complex cations.
Mention may be made in particular of sodium and potassium cations complexed by crown ethers.
Larger crown ethers are capable of binding functional groups and molecules.
In another embodiment the hinge may be formed by crown ethers known in the art.
Crown ethers arise from dialkylations that are templated by alkali metals.
Condensation reaction is accelerated and its yield significantly improved in the presence of crown ethers.
Crown ethers or chiral crown ethers are also suitable for this purpose.
The yields increase substantially when alkali hydroxides are used together with crown ethers.
Cyclic polyols such as crown ethers or cryptates are preferred phase transfer catalysts.
The macrocyclic chelating compound is preferably selected from the group of crown ethers and cryptands.
Crown ethers are cyclic molecules in which ether groups are connected by dimethylene linkages.
Other phase transfer catalysts which may be suitable include crown ethers and polyethylene glycols.
Orthoester derivatives of crown ethers as carriers for pharmaceutical and diagnostic compositions.
Other phase transfer catalysts which may be suitable include crown ethers and polyethylene glycol variants.
Crown ethers are macrocyclic compounds having complexing properties with respect to numerous metals.
The pharmaceutically active agents are taste masked with crown ethers through entrapment or coaccervation methods.
Crown ethers and quaternary amine salts are also useful as phase transfer catalysts.
Particularly suitable phase transfer catalysts are the Crown ethers.
It is understood that the crown ethers of the invention do not comprise peroxide groups.
This reaction can also be carried out in the co-presence of crown ethers.
Smaller crown ethers may have be capable of binding small metal ions only.
Examples of unfunctionalised and functionalised crown ethers are set out throughout Gokel et al.
Crown ethers are cyclic chemical compounds that consist of a ring containing several ether groups.
In the present invention, larger crown ethers are preferred.
Crown ethers are not the only macrocyclic ligands that have affinity for the potassium cation.
In the research lab, crown ethers are used for this purpose.
Crown ethers strongly bind certain cations, forming complexes.
Surveying macrocyclic chemistry, from flexible crown ethers to rigid cyclophanes.
Cryptates or crown ethers which form a complex with the cation perform this function very satisfactorily.
Since the salt is poorly soluble in nonpolar solvents, crown ethers are typically used.
The Crown ethers are particularly effective.
The inorganic cations can be sequestered by phase-transfer agents such as crown ethers.
The synthesis of crown ethers derived from meso-tartaric acid was investigated.
Phase transfer catalysts include tetralkylammonium salts, phosphonium salts and crown ethers.
Crown ethers are compounds with a number of ether compounds in a ring-like molecule.
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Examples of using Crown
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Push the two crown halves apart
And crown thy good with brotherhood
Seven stars and a crown on a field of blue
Examples of using Ethers
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Four ethers constitute the vital body
Foams comprised of cellulose ethers are especially preferred
Monobutyl ethers of ethylene glycol or of diethylene glycol
