The Preparation of Triorganosilyl Derivatives of Hydroquinone, Resorcinol, Bisphenol-A and Terephthalic Acid

Abstract Mercury (Hg) causes serious health issues in its all forms. Deficiency as well as excess of copper ion (Cu2+) in human body is hazardous. A series of four compounds have been derived from carboxylated benzoic acids (benzoic acid, isophthalic acid, terephthalic acid and phthalic acid) and 4H-1,2,4 triazole-4-amine and characterized. Fluorescencce detection of Hg2+ was recorded by the derivates with benzoic acid and isophthalic acid while the derivatives of terephthalic acid and phthalic acid detect Cu2+ by fluorescence “off” mode. Metal ions like Li+, Na+, K+, Zn2+, Al3+, Mg2+, Mn2+, Co2+, Ni2+, Cu2+, Cd2+, Pb2+ and Hg2+ found not to interfere. The stoichiometry of binding is 1:1 for the benzoic acid derivative with Hg2+ while it is 1:2 for the other three derivatives. The binding constants are ca. 10− 4.5 between the sensors and Hg2+ or Cu2+ and detection limits are around 10− 5.5 M. DFT calculation provided optimized geometries of the sensors and confirmed the stoichiometry of binding with Hg2+/Cu2+.

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Synthesis of peroxy oligomers using 1,2-epoxy-3-tert-butyl peroxypropane

Chemistry & Chemical Technology ◽

10.23939/chcht02.04.271 ◽

2008 ◽

Vol 2 (4) ◽

pp. 271-279

Author(s):

Michael Bratychak ◽

◽

Mikhailo Bratychak ◽

Olena Astakhova ◽

Olena Shyshchak ◽

...

Keyword(s):

Ethylene Glycol ◽

Bisphenol A ◽

Spectral Methods ◽

Phenol Formaldehyde ◽

Tert Butyl ◽

Derivatives Of

The possibility of peroxy oligomer synthesis has been studied by three methods: telomerization of diepoxy derivatives of ethylene glycol or Bisphenol A using 1,2-epoxy-3-tert-butyl peroxypropane as telogen, modification of phenol-formaldehyde resins by 1,2-epoxy-3-tert-butyl peroxypropane and polycondensation of phenol containing –O–O– bonds with formaldehyde. The peroxy oligomers obtaining conditions have been established and 7 new oligomers with peroxy groups have been synthesized. The structures of synthesized oligomers have been verified by chemical and spectral methods.

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The theoretical and experimental investigations of first hyperpolarizabilities for azo chromophores—Derivatives of bisphenol A

Materials Chemistry and Physics ◽

10.1016/j.matchemphys.2007.02.055 ◽

2007 ◽

Vol 103 (2-3) ◽

pp. 465-469 ◽

Cited By ~ 2

Author(s):

Irmina Zadrożna ◽

Ewa Kaczorowska

Keyword(s):

Bisphenol A ◽

Experimental Investigations ◽

Derivatives Of

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Optically active derivatives of terephthalic acid: four crystal structures from two powder patterns

Acta Crystallographica Section C Structural Chemistry ◽

10.1107/s2053229618001705 ◽

2018 ◽

Vol 74 (3) ◽

pp. 248-255 ◽

Cited By ~ 3

Author(s):

Vladimir V. Veselovsky ◽

Antonina V. Lozanova ◽

Vera I. Isaeva ◽

Anna A. Lobova ◽

Andrew N. Fitch ◽

...

Keyword(s):

Crystal Structures ◽

Terephthalic Acid ◽

Density Functional ◽

Optically Active ◽

Functional Theory ◽

Asymmetric Catalysts ◽

Potential Applications ◽

Powder Samples ◽

Metal Organic ◽

Derivatives Of

A novel important class of nanoporous crystalline solids, metal–organic frameworks (MOFs), composed of organic ligands (linkers) and metal ions, is now considered as a platform for the development of various functional hybrid materials. In order to design new MOF-based asymmetric catalysts, two terephthalic acid derivatives, namely 2-{[1-(1-tert-butoxycarbonyl)-L-prolyl]amino}terephthalic acid, C18H22N2O7, (1), and 2-(L-prolylamino)terephthalic acid, C13H14N2O5, (2), which could find potential applications as chiral linkers for the construction of enantioselective MOFs, were synthesized and their powder samples were measured at synchrotron station ID22 (ESRF). Each sample contained two unknown crystalline phases, so four new crystal structures were determined, namely, the 2.24-hydrate of (1), (1a) (space groupC2221), and the 2.08-hydrate of (1), (1b) (P2221), which are crystallohydrates, and two polymorphs of (2),i.e.(2a) (C2221) and (2b) (P212121), and were validated with DFT-d (dispersion-corrected density functional theory) optimizations.

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