- ORGANOMETALLIC COMPLEX, LIGHT EMITTING ELEMENT, LIGHT EMISSION DEVICE, ELECTRONIC APPARATUS, AND ILLUMINATION DEVICE
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PROBLEM TO BE SOLVED: To provide an organometallic complex which can convert a triplet excited state to light emission. SOLUTION: The present invention provides an organometallic complex having a structure represented by general formula (G7) where R1 is a branched alkyl group having carbon atoms of 4 or more with straight chain carbon atoms of 3 or more, or an alkyl group having carbon atoms of 5-10, R2 is hydrogen, an alkyl group having carbon atoms of 1-6, or a phenyl group, R3 is hydrogen or an alkyl group having carbon atoms of 1-6, R4-R7 are independently hydrogen, an alkyl group having carbon atoms of 1-6, an alkoxy group having carbon atoms of 1-6, an alkylthio group having carbon atoms of 1-6, a halogen group, a haloalkyl group having carbon atoms of 1-6, or an aryl group having carbon atoms of 1-6, M is central metal and represents a group 9 element or a group 10 element. COPYRIGHT: (C)2015,JPOandINPIT
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Paragraph 0263; 0265-0266
(2018/12/12)
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- Transition-metal-free formal decarboxylative coupling of ?±-oxocarboxylates with ?±-bromoketones under neutral conditions: A simple access to 1,3-diketones
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A transition-metal-free formal decarboxylative coupling reaction between ?±-oxocarboxylates and ?±-bromoketones to synthesize 1,3-diketone derivatives is presented. In this reaction, a broad scope of substrates can be employed, and neither a metal-based reagent nor an additional base is required. DFT calculations reveal that this reaction proceeds through a coupling followed by decarboxylation mechanism and the ?±-bromoketone unprecedentedly serves as a nucleophile under neutral conditions. The rate-determining step is an unusual hydrogen-bond-assisted enolate formation by thermolysis.
- He, Zhen,Qi, Xiaotian,Li, Shiqing,Zhao, Yinsong,Gao, Ge,Lan, Yu,Wu, Yiwei,Lan, Jingbo,You, Jingsong
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supporting information
p. 855 - 859
(2015/02/05)
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- High-yielding oxidation of β-hydroxyketones to β-diketones using o-Iodoxybenzoic acid
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The oxidation of β-hydroxyketones to β-diketones was systematically investigated. o-Iodoxybenzoic acid (IBX) was found to be efficient, operationally easy, and superior to other common oxidants. The reaction is suitable for milligram- to gram-scale oxidations.
- Bartlett, Samuel L.,Beaudry, Christopher M.
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experimental part
p. 9852 - 9855
(2012/01/02)
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- Enantioselective borohydride reduction catalyzed by optically active cobalt complexes
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The highly enantioselective borohydride reduction of aromatic ketones or imines to the corresponding alcohols was developed in the presence of a catalytic amount of an optically active cobalt(II) complex catalyst. This enantioselective reduction is carried out using a precisely premodified borohydride with alcohols such as tetrahydrofurfuryl alcohol, ethanol and methanol. High optical yields are obtained by choosing the appropriate alcohol as modifiers and a suitable β-ketoiminato ligand of the catalyst. The enantioselective borohydride reduction has been successfully applied to the preparation of optically active 1,3-diols, the stereoselective reduction of diacylferrocenes, and dynamic and/or kinetic resolution of 1,3-dicarbonyl compounds.
- Yamada, Tohru,Nagata, Takushi,Sugi, Kiyoaki D.,Yorozu, Kiyotaka,Ikeno, Taketo,Ohtsuka, Yuhki,Miyazaki, Daichi,Mukaiyama, Teruaki
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p. 4485 - 4509
(2007/10/03)
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- A novel synthesis of 1,3-diketones by reaction of an α-bromoketone with acyl chlorides promoted by gallium triiodide
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Promoted by gallium triiodide, an α-bromoketone, bromomethyl phenyl ketone, is treated with acyl chlorides to synthesize 1,3-diketones in good yields under mild and neutral conditions.
- Chen, Rener,Wu, Huayue,Zhang, Yongmin
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p. 666 - 667
(2007/10/03)
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- An alternative route to 1,3-diketones promoted by samarium diiodide
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Sml2 promoted condensation of α-haloketones with carboxylic acid chlorides or anhydrides leads to 1,3-diketones.
- Ying, Taokai,Bao, Weiliang,Zhang, Yongmin,Xu, Weinming
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p. 3885 - 3886
(2007/10/03)
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- β-Diketone synthesis by reaction of α-haloketones with acid chlorides or acid anhydrides promoted by samarium triiodide
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Promoted by SmI3, α-haloketones were reacted with acid chlorides or acid anhydrides and β-diketones were synthesized via intermediate samarium enolates.
- Ying, TaoKai,Bao, Weiliang,Zhang, Yongmin
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p. 2905 - 2909
(2007/10/03)
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