- Metal-free transamidation of benzoylpyrrolidin-2-one and amines under aqueous conditions
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N-Acyl lactam amides, such as benzoylpyrrolidin-2-one, benzoylpiperidin-2-one, and benzoylazepan-2-one reacted with amines in the presence of DTBP and TBAI to afford the transamidated products in good yields. The reactions were conducted under aqueous conditions and good functional group tolerance was achieved. Both aliphatic and aromatic primary amines displayed good activity under metal-free conditions. A radical reaction pathway is proposed.
- Joseph, Devaneyan,Lee, Sunwoo,Park, Myeong Seong
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supporting information
p. 6227 - 6232
(2021/07/28)
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- METHOD FOR THE SYNTHESIS OF BENZAZOLE
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PROBLEM TO BE SOLVED: To obtain a benzazole in a short reaction time with high yields. SOLUTION: A method for the synthesis of a benzazole includes a chemical reaction represented by the chemical reaction formula (1) to occur in subcritical water or supercritical water (X is NR6, O, or S. Y is H, OR7, halogen, or NR8R9. R1 to R9 are a C1-C20 aliphatic or aromatic substituent which may have O, N, S, B, Si, halogen, or P (two or more substituents of R1 to R6 may be coupled together, R8 and R9 may be coupled together, and two or more substituents of R1 to R9 may be the same) or H). SELECTED DRAWING: None COPYRIGHT: (C)2017,JPOandINPIT
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Paragraph 0027-0028
(2017/09/19)
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- A facile color-tuning strategy for constructing a library of Ir(III) complexes with fine-tuned phosphorescence from bluish green to red using a synergetic substituent effect of -OCH3 and -CN at only the C-ring of C∧N ligand
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By simply grafting a -CN group and/or a -OCH3 group onto the meta- and/or para-site of the C-ring, a series of Ir(iii) complexes bearing a similar molecular platform of bis(1,2-diphenyl-1H-benzimidazolato-N,C2′)iridium(iii)(acetylacetonate), but showing fine-tuned phosphorescence covering nearly the whole window of the visible spectrum with a wide color-tuning range of 109 nm was acquired. With the help of DFT calculations, it was revealed that if the C-related arene moiety of the C∧N ligand (C-ring) contributes substantially to both the HOMO and LUMO of an Ir(iii) complex, the concurrent introduction of an electron-donating -OCH3 and an electron-withdrawing -CN groups on the C-ring at the meta- and para-sites relative to the Ir atom may lead to a favorable synergetic substituent effect on the color-tuning direction. This may represent a facile yet effective molecular design strategy for Ir(iii) complexes with a desirous emission color. A bluish green organic light-emitting diode (OLED) based on one of the objective complexes displayed a maximum current efficiency of 62.1 cd A-1, an external quantum efficiency of 19.8%, and a brightness of 48-040 cd m-2, implying that high-performance red and blue OLED phosphors as well as libraries of Ir(iii) complexes bearing similar molecular platforms may be developed through this -OCH3 and -CN synergetic substitution strategy.
- Jiao, Yan,Li, Ming,Wang, Ning,Lu, Tao,Zhou, Liang,Huang, Yan,Lu, Zhiyun,Luo, Daibing,Pu, Xuemei
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supporting information
p. 4269 - 4277
(2016/06/01)
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- Simple molecular structure design of iridium(III) complexes: Achieving highly efficient non-doped devices with low efficiency roll-off
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To construct efficient emitters suitable for non-doped devices and deeply understand the relationship between structures and performances, we designed and synthesized two heteroleptic iridium(III) complexes based on 1,2-diphenyl-1H-benzoimidazole (PBI) li
- Wen, Li-Li,Yu, Jing,Sun, Hai-Zhu,Shan, Guo-Gang,Zhao, Kai-Yue,Xie, Wen-Fa,Su, Zhong-Min
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p. 142 - 150
(2016/06/01)
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