In an article, published in an article, once mentioned the application of 33100-27-5, Name is 1,4,7,10,13-Pentaoxacyclopentadecane,molecular formula is C10H20O5, is a conventional compound. this article was the specific content is as follows.HPLC of Formula: C10H20O5
The effects of solvent, temperature and pH (in aqueous solution) on the rate of decomposition of 2-naphthalenediazonium tetrafluoroborate were studied by UV spectrometry. The host-guest complexation and the kinetics of thermal dediazoniation of this model naphthalenediazonium ion, in the presence of four crown ethers and three acyclic polyethers, were studied in 1,2-dichloroethane (DCE) at 40C by UV spectrometry. Fast atom bombardment mass spectrometry (FAB-MS) was used for the gas phase complexation and characterization. The values of the activation enthalpy DeltaH# for the thermal dediazoniation of the uncomplexed salt were observed to be high, and the corresponding values of activation entropy DeltaS# were clearly positive. All hosts, except short 12-crown-4, formed 1:1 complexes under FAB conditions. The complexation equilibrium constant K and the values of the stabilizing ability of the complexation (k2/k1 in DCE were calculated using a kinetic me thod. In accordance with earlier studies of arene- and 1-naphthalene diazonium ions, the thermodynamic and kinetic stabilities were observed to be greater for the inclusion complex-the largest for 21-crown-7 and its derivatives, formed with crown ethers containing at least six oxygen atoms-than for the non-specific adduct formation formed with 15-crown-5. The values of the thermodynamic and kinetic macrocyclic effect were discussed. The results are consistent with a heterolytic SN 1-like mechanism involving the decomposition of the uncomplexed and complexed naphthalenediazonium ion into a highly reactive naphthyl cation, followed by fast product-determining reactions with nucleophiles to give the products.
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Reference：
Chiral Catalysts,
Chiral catalysts – SlideShare