Extending the Hydrogen-bonding Array in ortho-Phenylenediamine Based Bis-ureas
نویسندگان
چکیده
منابع مشابه
Ortho-phenylenediamine Based Bis-ureas as the Ion Selective Sensors; A QM/MD Study
Density functional theory dispersion corrected (DFT-D3)calculations and molecular dynamic (MD) simulation were applied to investigate the sensing ability of four types of receptors (RCs) composed of the ortho-phenylenediamine based bis-ureas for selective complexation with the anions such as Cl–, Br–, OAC–, PhCO2–, H2PO4– and HSO4– in the gas phase and DMSO. On the basis of the data obtained fr...
متن کاملHighly effective yet simple transmembrane anion transporters based upon ortho-phenylenediamine bis-ureas.
Simple, highly fluorinated receptors are shown to function as highly effective transmembrane anion antiporters with the most active transporters rivalling the transport efficacy of natural anion transporter prodigiosin for bicarbonate.
متن کاملAnion transport by ortho-phenylene bis-ureas across cell and vesicle membranes.
Ortho-Phenylene bis-ureas serve as anionophores in cells expressing halide-sensitive yellow fluorescent protein, as well as in synthetic vesicles. Activities can reach high levels, and are strongly dependent on the deliverability of the transporters.
متن کاملOrthohalogen substituents dramatically enhance hydrogen bonding of aromatic ureas in solution.
The phenylurea moiety is a ubiquitous synthon in supramolecular chemistry. Here we report that the introduction of chlorine or bromine atoms in the ortho positions to the urea unit is a simple and very efficient way to improve its intermolecular hydrogen bond (HB) donor character. This effect was demonstrated in solution both in the context of self-association of bis-ureas and hydrogen bonding ...
متن کاملSynthesis of bis-ureas from bis(o-nitrophenyl) carbonate.
A general method for the preparation of bis-ureas from bis(o-nitrophenyl) carbonate has been developed. Directional urea synthesis is achieved by sequential amine addition to bis(o-nitrophenyl) carbonate in two steps: in the first step bis(o-nitrophenyl) carbonate is reacted with benzylamine to form benzyl-o-nitrophenyl carbamate; in the second step the carbamate is reacted with a variety of di...
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ژورنال
عنوان ژورنال: Supramolecular Chemistry
سال: 2007
ISSN: 1061-0278,1029-0478
DOI: 10.1080/10610270600879076