73790-20-2Relevant articles and documents
Fused-ring acceptors based on quinoxaline unit for highly efficient single-junction organic solar cells with low charge recombination
Chen, Yang,Fan, Jian,Huang, Yuting,Li, Yaowen,Sun, Bangjin
, (2021/07/21)
Two non-fullerene small molecule acceptors (TFQ-F and TFQ-Cl) based on quinoxaline unit were designed and synthesized for efficient organic solar cells (OSCs). These two acceptors showed intense absorption up to 900 nm and high thermal stabilities with decomposition temperatures over 360 °C due to their fused-ring skeletons. TFQ-F and TFQ-Cl are the A-D-A′-D-A type acceptors (A/A′ for acceptor unit and D for donor unit). TFQ-F and TFQ-Cl have the same D-A′-D fragment, which was flanked with different ending groups. The effect of different ending groups on their photophysical properties, electrochemical behaviors, micro-structures and charge recombination properties of active layers, and device performance were investigated systematically. PM6 with the complementary absorption to the two acceptors was used as the donor material. The pristine PM6:TFQ-F blend films displayed the optimal morphologies as revealed by AFM and TEM measurement. Organic solar cells based on PM6:TFQ-Cl blend film showed high JSC of 25.19 mA/cm2 and PCE of 13.2%. The Voc, JSC and PCE for PM6:TFQ-F film based device were 0.857 V, 23.70 mA/cm2 and 13.51%, respectively. The dependence of VOC/JSC on various light intensities indicated that PM6:TFQ-F/Cl based device had low charge recombination.
Catalyst-Free and Transition-Metal-Free Approach to 1,2-Diketones via Aerobic Alkyne Oxidation
Shen, Duyi,Wang, Hongyan,Zheng, Yanan,Zhu, Xinjing,Gong, Peiwei,Wang, Bin,You, Jinmao,Zhao, Yulei,Chao, Mianran
, p. 5354 - 5361 (2021/05/05)
A catalyst-free and transition-metal-free method for the synthesis of 1,2-diketones from aerobic alkyne oxidation was reported. The oxidation of various internal alkynes, especially more challenging aryl-alkyl acetylenes, proceeded smoothly with inexpensive, easily handled, and commercially available potassium persulfate and an ambient air balloon, achieving the corresponding 1,2-diketones with up to 85% yields. Meanwhile, mechanistic studies indicated a radical process, and the two oxygen atoms in the 1,2-diketons were most likely from persulfate salts and molecular oxygen, respectively, rather than water.
Phosphorus(III)-Mediated, Tandem Deoxygenative Geminal Chlorofluorination of 1,2-Diketones
Choi, Garam,Chung, Won-Jin,Hwang, Sunjoo,Jang, Hanna,Kim, Ha Eun
, p. 4190 - 4195 (2020/06/27)
Tetrasubstituted carbon containing two different halogen substituents was constructed in a single-step operation by utilizing the carbene-like reactivity of dioxaphospholene through the tandem reaction of electrophilic and nucleophilic halogenating reagents. It was crucial to devise non-dealkylatable phosphoramidite, which enabled the efficient formation of geminal chlorofluorides from various 1,2-diketones with (PhSO2)2NF and n-Bu4NCl. In addition, selective functionalization of the chlorine substituent was demonstrated, and the absence of halogen scrambling was confirmed.
Synthetic method and application of diphenylglyoxal compound
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Paragraph 0020-0022, (2019/11/20)
The invention provides a preparation method of a synthetic diphenylglyoxal compound. A methylbenzene compound is oxidized by oxygen under the co-catalysis action of cuprous bromide, sodium nitrite, DDQ and protonic acid, and the diphenylglyoxal compound is prepared by a one-step method. Through suitable selectivity and collaboration of a catalyst and a reaction condition, a target product with high yield is realized, the efficiency is high in the preparation process, the cost is low, very outstanding technical significance and application value are achieved in the field of medical intermediatesynthesis, and market prospects are wide.
Preparation method of bibenzoyl compound and application
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Paragraph 0021-0023, (2019/11/20)
The invention provides a preparation method for synthesizing dibenzoyl compounds. Under the co catalysis of cuprous bromide, sodium nitrite, DDQ and protonic acid, a benzyl alcohol compound is oxidized by oxygen, and a bibenzoyl compound is obtained by a one-step method. Through the appropriate selection and coordination of the catalyst, reaction conditions and the like, target products with highyield are obtained, and in the preparation process, the efficiency is good, and the cost is low; and the technical significance and application value in the field of pharmaceutical intermediates synthesis are significant, and the market prospect is wide.
Synthesis of ferrocene derivatives with planar chirality via palladium-catalyzed enantioselective C-H bond activation
Pi, Chao,Cui, Xiuling,Liu, Xiuyan,Guo, Mengxing,Zhang, Hanyu,Wu, Yangjie
supporting information, p. 5164 - 5167 (2014/12/11)
The first catalytic and enantioselective C-H direct acylation of ferrocene derivatives has been developed. A series of 2-acyl-1-dimethylaminomethylferrocenes with planar chirality were provided under highly efficient and concise one-pot conditions with up to 85% yield and 98% ee. The products obtained could be easily converted to various chiral ligands via diverse transformations.
Copper-catalyzed aerobic oxidative C-C bond cleavage of 1,3-diaryldiketones to synthesize 1,2-diketones
Zhang, Chun,Wang, Xiaoyang,Jiao, Ning
supporting information, p. 1458 - 1460 (2014/06/23)
An aerobic oxidative C-C bond cleavage of 1,3-diaryldiketones for the synthesis of 1,2-diketones by using O2 as the oxidant has been developed. Control experiments illustrate that the copper catalyst not only assist the aerobic oxidative process of 1,3-diketones, but also catalyze the 1,2-Wagner-Meerwein-type rearrangement process. Georg Thieme Verlag Stuttgart. New York.
Design, synthesis and biological evaluation of 2, 4, 5-triphenylimidazole derivatives with preliminary SAR
Hu, Chunqi,Shen, Jianfeng,Bian, Kejun,Zhang, Ruoyu,Deng, Liping
, p. 762 - 769 (2014/07/07)
A series of N1-substituted 2,4,5-triphenyl imidazole derivatives was designed, synthesized and evaluated for their p53-MDM2 binding inhibitory activities and anti-proliferative activities in vitro against four human cancer cell lines (PC3, KB, A549 and HCT116). Although logical evaluation revealed weak p53-MDM2 binding inhibitory activities, most of the obtained molecules displayed moderate to potent cytotoxicities against tested cell lines. As a potential lead compound for further optimization, compound 9c was evaluated as the most potent compound against four cell lines and could induce cell cycle arrest at G2/M phase. The binding mode of compound 9f and MDM2 was further studied by docking analysis and the unexpected interaction mode revealed that this series of compounds may take part into a different binding modes as the lead compound Such as Nutlin, which could induce a different mechanism in cancer therapy.
Cu-catalyzed esterification reaction via aerobic oxygenation and C-C bond cleavage: An approach to α-ketoesters
Zhang, Chun,Feng, Peng,Jiao, Ning
supporting information, p. 15257 - 15262 (2013/11/06)
The Cu-catalyzed novel aerobic oxidative esterification reaction of 1,3-diones for the synthesis of α-ketoesters has been developed. This method combines C-C σ-bond cleavage, dioxygen activation and oxidative C-H bond functionalization, as well as provides a practical, neutral, and mild synthetic approach to α-ketoesters which are important units in many biologically active compounds and useful precursors in a variety of functional group transformations. A plausible radical process is proposed on the basis of mechanistic studies.
CuI-catalyzed and air promoted oxidative cyclization for one-pot synthesis of polyarylated oxazoles
Hu, Ping,Wang, Qiang,Yan, Yizhe,Zhang, Shuai,Zhang, Baiqun,Wang, Zhiyong
supporting information, p. 4304 - 4307 (2013/08/23)
A facile CuI-catalyzed and air promoted oxidative cyclization was developed for the synthesis of polyarylated oxazoles. By virtue of this method, a variety of arylated oxazoles could be easily synthesized from readily available starting materials at room temperature in air. The Royal Society of Chemistry 2013.
