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Safrole-2',3'-oxide induces cytotoxic and genotoxic effects in HepG2 cells and in mice.
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Triazole-modified calix[4]crown as a novel fluorescent on-off switchable chemosensor.
TLDR
Metal ion exchange can trigger an on-off switchable fluorescent chemosensor that is composed of a triazole-modified calix[4]crown in the 1,3-alternate conformation.
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Synthesis of upper-rim allyl- and p-methoxyphenylazocalix[4]arenes and their efficiencies in chromogenic sensing of Hg2+ ion.
TLDR
Both the upper-rim p-allyl- and p-methoxyphenylazo groups on calix[4]arenes are proven to be key components in the recognition of Hg2+ ion.
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1,3-Alternate Calix[4]arene Functionalized With Pyrazole and Triazole Ligands as a Highly Selective Fluorescent Sensor for Hg2+ and Ag+ Ions
TLDR
Ligand 8 forms a strong complex with either two Hg2+ or two Ag+ ions using both the upper and lower rims of the 1,3-alternate calix[4]arene as the binding pockets; hence, it represents one of the highly selective fluorescent sensors for the homoditropic sensing of Hg-2+ and Ag- ions.
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Face selection in addition and elimination in sterically unbiased systems.
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Synthesis of Calix[4]arenes with Four Different "Lower Rim" Substituents.
TLDR
Calix[4]arenes with four different "lower rim" substituents were synthesized following six-step sequences to give the chiral title compounds.
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Cooperative recognition of a copper cation and anion by a calix[4]arene substituted at the lower rim by a beta-amino-alpha,beta-unsaturated ketone.
We report herein a new ditopic calix[4]arene receptor 25,27-bis-{[4-amino-4-(1-naphthyl)-2-oxo-3-butenyl]oxy}-26,28-dihydroxycalix[4]arene (2) for the simultaneous complexation of anionic and…
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Cycloadditions of 16-Electron 1,3-Dipoles with Ethylene. A Density Functional and CCSD(T) Study.
TLDR
This work shows that the configuration mixing (CM) model based on Pross and Shaik's theory can successfully predict the relative ordering of the activation energy and reaction enthalpies of DC reactions.
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Upper rim allyl- and arylazo-coupled calix[4]arenes as highly sensitive chromogenic sensors for Hg2+ ion.
TLDR
The 4-(4-methoxyphenyl)azophenol-coupled calix[4]arenes (the 3b-5b series) are found to be highly sensitive for mercury ion (Hg(2+)) among the 10 different metal ions screened.
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Highly selective fluorescent sensing of Cu2+ ion by an arylisoxazole modified calix[4]arene
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