59970-10-4Relevant articles and documents
Cation Transport Using Antraquinone-Derived Lariat Ethers and Podands: The First Example of Electrochemically Switched ''On/Off'' Activation/Deactivation
Echegoyen, Lourdes E.,Yoo, Hyunsook Kim,Gatto, Vincent J.,Gokel, George W.,Echegoyen, Luis
, p. 2440 - 2443 (1989)
Antraquinone undergoes one- and two-electron reduction to form either radical anions or dianions.When a crown-ather-type macrocycle or a polyethyleneoxy side chain is attached, the reduced aromatic and the oxygen donor groups cooperate to bind the cation.Binding of Li(1+) or Na(1+) is greater when antraquinone is reduced because there is a charge-charge intraction between it and the cation.This property has been used to facilitate transport.Thus, reduction at the source phase enhances cation binding, and oxidation in the receiving phase induces cation release.Activation/deactivation was effected electrochemically.The ligands studied in a bulk CH2Cl2 phase were 1-((9,10-dioxo-1-oxanthracenyl)methyl)-15-crown-5, 1; 1-((9,10-dioxo-1-oxanthracenyl)methyl)-18-crown-6, 2; 1-(2-(2-(2-(2-methoxyethoxy)ethoxy)ethoxy)ethoxy)anthracene-9,10-dione, 3; 1-(2-(2-(2-(2-octadecyloxyethoxy)ethoxy)ethoxy)ethoxy)anthracene-9,10-dione, 4.The first example of an electrochemically activated (reduction) and deactivated (oxidation) cation transport system based on anthraquinone ligands is demonstrated.
HETEROANALOGUES OF 1-TRIACONTANOL
Kocian, Oldrich,Stransky, Karel,Zavada, Jiri
, p. 1356 - 1366 (2007/10/02)
A synthesis of twelve heteroanalogues II-XIII of the plant growth stimulator 1-triacontanol (I), derived from the parent alcohol by a replacement of 1-4 methylene units by heteroatoms O,S,NH and/or by a replacement of 1-2 ethylene units by -CO-O-, -CO-NH- or groups is reported.Spectral and gas-chromatographic properties (Kovats retention indices) of the compounds are described.
