130-16-5Relevant articles and documents
Nonreductive deiodination of ortho-iodo-hydroxylated arenes using tertiary amines
Talekar, Rahul Subhash,Chen, Grace Shiahuy,Lai, Shin-Yu,Chern, Ji-Wang
, p. 8590 - 8593 (2005)
A convenient and nonreductive deiodination is reported for the ortho-iodo-hydroxylated arenes inch ding derivatives of quinolinol, phenol, and naphthol. Tertiary amines pyridine, triethylamine, and N-methylmorpholine in the presence of water initiated deiodination of ortho-iodo-hydroxylated arenes without affecting para-iodine and other reduction-susceptible groups. This reported method also works efficiently for polyiodinated systems. Simplicity, short reaction times, and absence of reducing catalyst are features of this method.
Study on Relationship Between Fluorescence Properties and Structure of Substituted 8-Hydroxyquinoline Zinc Complexes
Jianbo, He,Tingting, Zhou,Yongjing, Cao,Yuanyuan, Zhang,Weiqing, Yang,Menglin, Ma
, p. 1121 - 1126 (2018/08/17)
Organic light-emitting diodes (OLEDs) produced from 8-hydroxyquinoline metal complexes play a vital role in modern electroluminescent devices. In this manuscript, a series of 8-hydroxyquinoline derivatives were synthesized by different methods and their corresponding zinc metal complexes were prepared. The UV and fluorescence properties of the complexes were measured aiming to understand the effect of substituents at the quinoline ring on the fluorescence properties of the complexes. When the C-5 of 8-hydroxyquinoline was replaced by halogen group, the fluorescence emission wavelengths had been red-shifted, at the same time, blue-shifted of fluorescence emission wavelength was observed when the C-5 position of 8-hydroxyquinoline was substituted by electron-withdrawing group. When the C-4 position of 8-hydroxyquinolie was substituted by methyl or the C-5 position was substituted by sulfonic acid group, the corresponding zinc complexes had higher fluorescence intensity than 8-hydroxyquinolie zinc.
Preparation method of 5-chloro-8-hydroxyquinoline
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Paragraph 0040; 0041; 0049; 0051; 0053; 0055, (2018/07/15)
The invention discloses a preparation method of 5-chloro-8-hydroxyquinoline, aiming at solving the problems that when the 5-chloro-8-hydroxyquinoline is prepared by using 4-chloro-2-aminophenol, 4-chloro-2-nitrophenol and glycerol as raw materials and adopting a Skraup method in a loop closing way at present, sulfuric acid reacts violently with the glycerol in a process of dropwise adding the sulfuric acid so as to produce a large amount of acrolein, the acrolein self-polymerizes into tar, the tar is not only difficult to remove during the post-treatment of the product, but also reduces the reaction yield, the reaction process is difficult to control, and a great deal of waste acid is produced. According to the preparation method, hydrochloric acid is used as a solvent and the acrolein istaken as a loop closing raw material, so that the step of producing the acrolein by using the sulfuric acid and the glycerol is avoided, the generation of the tar is effectively reduced, and the heatrelease state of the reaction is controlled; furthermore, the problem that impurities are produced due to a sulfonation reaction of the product can be avoided, the product yield and safety are improved, the reaction is easy to control, and industrialization is easily realized; therefore, the preparation method has a higher application value.