macrocyclic crown ether

Macrocyclic polyethers were synthesised by applying Shinsei Chemical's unique single structure polyethylene glycol synthesis technology.

  

As 18-Crown-6 is widely used as a correlation transfer catalyst and host-guest compound, polymeric cyclic ethers are also reported to perform well as polymeric materials and as modifiers in lithium-ion batteries.
We have succeeded in synthesising a single structure, giant crown ether by intramolecular cyclisation of polymeric PEG obtained by our unique synthetic method.
At present, the largest molecular weight synthesis has been achieved with a molecular weight of 4,934 (repeat unit 112: 336-Crown-112), but further macrocyclic structures can also be synthesised as the synthesis method has already been established.









Comparison sample: cyclic ether (SCHEM00927) derived from commercially available PEG (molecular weight distribution with average molecular weight 2,000): the chromatogram appears to be a single peak, but the MS spectrum clearly shows that it is a mixture of about 37 to 46 repeat units.



Shinsei Chemical has a large number of synthesised products, such as branched PEG derivatives and poly-THF, using high-purity polyether synthesis technology.


Branched crown ether technical data.
Cyclic PEGs with disulphide bonds.
S-containing crown ether
Azacrown ether (N-containing crown ether)
List of crown ethers

We have experience in the derivation of various functional groups by applying single-structure PEG synthesis technology.



Click herefor any Orgenic compounds.