82-17-7Relevant articles and documents
Oligoether derivatives of 1-phenoxyanthraquinone: Synthesis, photochromism, and complex formation with metal cations
Mart’yanov,Klimenko,Ushakov
, p. 1126 - 1136 (2016/10/04)
1-Phenoxyanthraquinone isomeric conjugates with tetraethylene glycol were prepared. Their photochromic properties and complex formation in solutions were quantitatively studied by spectrophotometry, quantum yields of the arylotropic photoisomerism and stability constants of complexes between para–ana-quinoid isomers and metal cations. The photochemical migration of a phenyl group considerably affects the complex stability thus providing the possibility to regard the synthesized compounds as photocontrolled ionophores. The structure of some complexes was investigated by X-ray diffraction (XRD) analysis and quantum-chemical simulation.
Synthesis of phenoxyanthraquinones
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, (2008/06/13)
A method of synthesizing phenoxyanthraquinones in the absence of excess phenol, water-miscible alcohols or polar aprotic solvents. Phenoxyanthraquinones are synthesized in high yield and purity by treatment of the corresponding chloro- or nitroanthraquinone with an equivalent of alkali metal phenoxide, particularly potassium phenoxide in a liquid aromatic solvent which is a chloro-substituted benzene, a lower alkyl-substituted benzene, or a loweralkyl-chloro-substituted benzene. The use of the inventive solvents results in high yields of readily isolable, substantially pure product. The used solvent is readily recoverable without the pollution potential of excess phenol or difficultly recoverable water-miscible solvents.
