881-90-3Relevant articles and documents
Synthesis of series of low band gap small organic molecules and evaluation of their solar cell activity
Sharma,Handique
, p. 2223 - 2227 (2016)
Organic solar cells have attracted much attention in the recent years but still in search of devices with efficiency comparable to that of silicon solar cells. In this view, a series of highly conjugated imidazolinone molecules were synthesized by a simple in situ coupling method, which resulted in high yield (85-95 %) of the products compared to the traditional method of synthesis. UV-visible studies performed in varying solvents differing in polarity, showing shift in their spectra with change in polarity. The band gap calculated thereafter ranged between 2.8-3.1 eV showing their potential for use in photovoltaic cell. Studies of the I-V characteristics of the photovoltaic devices fabricated with the newly synthesized molecules were performed. The devices with naphthalene substituent showed the highest power conversion efficiency of 0.1 % compared to others, thereby opening up room for use in organic solar cells.
2H-thiazolo [3, 2-b]-1, 2, 4-triazine-3, 7-diketone derivative and application thereof
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Paragraph 0011, (2020/12/29)
The invention discloses a 2Hthiazolo [3, 2b] 1, 2, 4triazine 3, 7diketone derivative as shown in a general formula I or pharmaceutically acceptable hydrate and salt thereof, the 2Hthiazolo [3, 2b] 1,2, 4triazine 3, 7diketone derivative comprises stereoisomers or tautomers thereof, and R1 and R2 in the general formula I can be optionally selected from one, two or three independently selected fromhydrogen, alkyl, alkoxy, halogen, hydroxyl, acetyl, propionyl, nitro or trifluoromethyl. The 1, 2, 4-triazine 3, 7diketone derivative has an obvious inhibiting effect on acetylcholin esterase, and isused for enhancing the memory of a patient suffering from dementia and Alzheimer's disease. The invention also relates to a preparation method of the compound and the application of the compound in preparation of drugs for treating Alzheimer's disease.
Nickel-Catalyzed Asymmetric Hydrogenation of 2-Amidoacrylates
Chen, Jianzhong,Gridnev, Ilya D.,Hu, Yawen,Li, Bowen,Zhang, Wanbin,Zhang, Zhenfeng
supporting information, p. 5371 - 5375 (2020/02/15)
Earth-abundant nickel, coordinated with a suitable chiral bisphosphine ligand, was found to be an efficient catalyst for the asymmetric hydrogenation of 2-amidoacrylates, affording the chiral α-amino acid esters in quantitative yields and excellent enantioselectivity (up to 96 % ee). The active catalyst component was studied by NMR and HRMS, which helped us to realize high catalytic efficiency on a gram scale with a low catalyst loading (S/C=2000). The hydrogenated products could be simply converted into chiral α-amino acids, β-amino alcohols, and their bioactive derivatives. Furthermore, the catalytic mechanism was investigated using deuterium-labeling experiments and computational calculations.
