34824-20-9Relevant academic research and scientific papers
Solid-state esterification via ionic-to-covalent bond transformation in ionic molecular crystals consisting of disubstituted anthracene anion-cation combinations
Suzuki, Masato,Fujii, Takahiro,Naito, Yoko,Yamoto, Kazuhisa,Matsuoka, Shin-Ichi,Takagi, Koji,Sugiyama, Haruki,Uekusa, Hidehiro
, p. 343 - 348 (2018)
Thermal solid-state reactions involving ionic-to-covalent bond transformation were achieved in the ionic molecular crystals of 1,8-bis[(pyridin-1-ium-1-yl)methyl]anthracene anthracene-1,8-dicarboxylate to produce the cyclic diester. The crystal structure given by X-ray diffraction analysis showed that the electrostatic interaction between the benzyl pyridinium cation and the carboxylate anion successfully works to locate these reaction sites close to each other and that there are channels for crystalline solvents and the liberated pyridine to escape. There by, the cyclic diester was selectively formed by the crystal-to-crystal reaction, which was proven by powder XRD profiles and optical microscopic and SEM images of the crystals before and after the reaction. This is the first thermal crystal-to-crystal condensation reaction. Another ionic molecular crystal of 1,8-bis[(pyridin-1-ium-1-yl)methyl]anthracene anthraquinone-1,8-dicarboxylate was also studied. There in, the corresponding cyclic diester was also obtained, but the crystals were transformed to amorphous solid by the reaction.
Fluorescent molecule for identifying mercury ions as well as preparation method and application
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, (2019/01/08)
The invention discloses a fluorescent molecule for identifying mercury ions as well as a preparation method and application. Polycyclic aromatic hydrocarbons including a naphthalene ring or an anthracene ring and the like are used as starting raw materials and different identification sites are connected through a series of organic synthetic reaction (including substitution and addition) to obtainmolecular-tweezers-shaped main body compounds with different identification properties. The fluorescent molecule can be used for detecting the mercury ions and the problem that guest molecules cannotbe easily effectively identified through an existing molecule device is solved.
Synthesis of novel macrocyclic tetraamides
Mehta, Barun Kumar,Rambabu, Dandela,Raja, Guttikonda,Prasad,Fang, Jim-Min,Rao, Mandava Venkata Basaveswara
, p. 756 - 761 (2014/07/07)
A simple and facile route has been described for the synthesis of macrocyclic tetraamides. This method is applicable for the preparation of a variety of macrocyclic tetraamides of various heteroatom substitutions.
