Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn¡¯t involve a screen. 14098-44-3, C14H20O5. A document type is Article, introducing its new discovery., Quality Control of: Benzo-15-crown-5
Benzo- and dibenzo-crown ethers substituted with (azulene-1-yl) azo chromophores. Synthesis and properties
Colored benzo- and dibenzo-crown ethers with (azulene-1-yl) azo chromophores(s) at benzo ring(s) were synthesized in good yields starting from the amines of the benzo- and dibenzo-crown ethers which were diazotized and coupled with azulenes. The obtained crown ethers were characterized and several properties of the generated new dyes were investigated (electronic and NMR-spectra, as well as pKa values, the lipophilicity and the coordination with metal cations).
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Reference£º
Chiral Catalysts,
Chiral catalysts – SlideShare