16205-44-0Relevant articles and documents
Synthesis, characterization, optical properties, computational characterizations, QTAIM analysis and cyclic voltammetry of new organic dyes for dye-sensitized solar cells
Agheli, Zahra,Pordel, Mehdi,Beyramabadi, Safar Ali
, (2020)
In recent years, dye-sensitized solar cells (DSSCs) have regarded as potential solar cells for the next generation of photovoltaic technologies. Many organic compounds are explored and used in DSSCs to produce low-cost devices and improve the cell efficiency. In this work, three new heterocyclic purple dyes are synthesized from the reaction of 3-nitropyrazolo[1,5-a]pyridine with various arylacetonitriles for dye-sensitized solar cells (DSSCs), exhibiting high molar extinction coefficients and a broad absorption range led to the good photovoltaic performance of 6.95–7.18%. Physical spectral, analytical data and optical properties are established the structures of the new dyes. The optimized geometries and relevant frontier orbitals of the dyes are obtained by density functional theory (DFT) at the level of B3LYP/6-311 + G(d,p). Electrostatic potential maps and electron density maps of the dyes were also obtained by atoms in molecules (AIM) analysis. Cyclic voltammetry measurement was performed to evaluate the electrochemical properties of the dyes and reversible oxidation waves were observed for them.
Preparation method of pyrazolo[1,5-a]pyridine derivative
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Paragraph 0046-0054, (2021/04/21)
The invention discloses a preparation method of pyrazolo[1,5-a]pyridine derivatives, and belongs to the field of organic synthesis. The problems that an existing pyrazolo[1,5-a]pyridine structure synthesis method needs metal catalysis, the substrate range is limited, the total yield of multi-step reaction is low, stoichiometric additives, toxic oxidants and oxygen-free technologies are adopted, and reaction conditions are harsh are solved. The method comprises the steps: dissolving pyridinium salt, unsaturated alkene and 2,3-dichloro-5,6-dicyanobenzoquinone in an organic solvent, dropwise adding triethylamine to react, concentrating by a rotary evaporator to remove the solvent, and separating and purifying by silica gel column chromatography to obtain the pyrazolo[1,5-a]pyridine derivative.
2-pyridine substituted urea structural small molecule compounds as well as synthesis and application thereof
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Paragraph 0197; 0742-0744, (2020/03/03)
The invention relates to 2-pyridine substituted urea structural small molecule compounds as well as synthesis and application thereof. Specifically, the invention discloses the compounds represented by a formula (I) shown in the specification, enantiomers, diastereomers, racemates or a mixture of the compounds, or a pharmaceutically acceptable salt, hydrate and solvate of the compounds, a preparation method of the above materials, and applications of the above materials in preparation of an ASK1 small molecule inhibitor, or medicines for preventing and/or treating diseases related to ASK1, especially liver diseases, lung diseases, cardiovascular diseases, kidney diseases and metabolic diseases.