2 results about "Quinoxaline" patented technology

The invention discloses a pyridine quinoxaline double pillar [n] aromatic hydrocarbon based nanoparticle, and a preparation method and applications thereof. The preparation method comprises followingsteps: double pillar [n] aromatic hydrocarbon main body molecule H and object molecule G1 and G2 are mixed to be uniform in an organic solvent at a certain ratio, an obtained mixture is introduced into a surfactant aqueous solution so as to obtain the pyridine quinoxaline double pillar [n] aromatic hydrocarbon based nanoparticle. The pyridine quinoxaline double pillar [n] aromatic hydrocarbon based nanoparticle possesses excellent water solubility, and excellent light capturing performance; pyridine quinoxaline double pillar [n] aromatic hydrocarbon is taken as an energy donor; object moleculeG2 is taken as an energy receptor, and G1 is taken as an energy bridge, so that transmission of the subject energy to the object is realized, and the fluorescence intensity of the nanoparticle composed of H, G1, and G2 is increased to be much higher than that of G2 nanoparticle at the same concentrations.

The invention relates to a method for preparing a quinoxaline-2-ketone derivative through controllable catalysis. The method comprises the following steps: adding a Selectfluor reagent into an organic solvent, carrying out ultrasonic dissolution, respectively adding a quinoxaline-2-ketone compound, an alcohol and an additive into the organic solvent, carrying out a stirring reaction at room temperature under the irradiation of a light source, tracking by TLC until the raw material quinoxaline-2-ketone compound is completely reacted, then ending the reaction, and carrying out post-treatment and column chromatography separation and purification to obtain the 3-alkoxy quinoxaline-2-ketone derivative or the 3-hydroxyalkyl quinoxaline-2-ketone derivative. Clean visible light is used as reaction energy, the preparation process is simple and efficient, operation is convenient, conditions are mild, environment friendliness is achieved, the substrate application range is wide, and the method is suitable for large-scale industrial production.