- HETEROAROMATIC DERIVATIVE COMPOUND FOR ORGANIC ELECTROLUMINESCENT DEVICE AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
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A compound for an organic electroluminescent device comprises the compound 1. It is thereby possible. The present invention relates to a heterocyclic compound for an organic electroluminescent device and a method for manufacturing the same. Structural 1.
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Paragraph 0201-0205
(2020/12/30)
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- A classical but new kinetic equation for hydride transfer reactions
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A classical but new kinetic equation to estimate activation energies of various hydride transfer reactions was developed according to transition state theory using the Morse-type free energy curves of hydride donors to release a hydride anion and hydride acceptors to capture a hydride anion and by which the activation energies of 187 typical hydride self-exchange reactions and more than thirty thousand hydride cross transfer reactions in acetonitrile were safely estimated in this work. Since the development of the kinetic equation is only on the basis of the related chemical bond changes of the hydride transfer reactants, the kinetic equation should be also suitable for proton transfer reactions, hydrogen atom transfer reactions and all the other chemical reactions involved with breaking and formation of chemical bonds. One of the most important contributions of this work is to have achieved the perfect unity of the kinetic equation and thermodynamic equation for hydride transfer reactions. The Royal Society of Chemistry.
- Zhu, Xiao-Qing,Deng, Fei-Huang,Yang, Jin-Dong,Li, Xiu-Tao,Chen, Qiang,Lei, Nan-Ping,Meng, Fan-Kun,Zhao, Xiao-Peng,Han, Su-Hui,Hao, Er-Jun,Mu, Yuan-Yuan
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p. 6071 - 6089
(2013/09/12)
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- Compounds having cGMP-PDE inhibitory effect
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Novel fused tetracyclic heterocyclic compounds having a potent and highly selective effect of inhibiting cyclic GMP phosphodiesterase (cGMP-PDE) and a high safety; a process for producing the same; drugs characterized by containing at least one of these compounds as the active ingredient, in particular, preventives and/or remedies for pulmonary hypertension, ischemic heart diseases, erectile insufficiency, female sexual dysfunction or diseases against which cGMP-PDE inhibitory effects are efficacious and intermediates useful in producing the above compounds.
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- Hydrobromic acid-dimethyl sulfoxide reagent for dealkylation of 5,10-dialkyl-5,10-dihydrophenazines: Synthesis of 10-alkyl- 2(10H)-phenazinones
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By the reaction of 5,10-dialkyl-substituted 5,10- dihydrophenazine with hydrobromic acid in dimethyl sulfoxide at 90-110°, 10-alkyl-2(10H)-phenazinone was obtained as a major product. Brominated dihydrophenazine was isolated in the case of 1,6-dichloro-5,10-dimethyl-5,10-dihydrophenazine.
- Sugimoto, Akira,Yoshino, Yasuyuki,Watanabe, Ryo,Mizuno, Kazuhiko,Uehara, Kaku
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p. 1057 - 1064
(2007/10/03)
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- Successive electron transfer reaction of the lithium salt of 5-methyl-5,10-dihydrophenazine anion with 4-nitrophenethyl bromide via 4-nitrostyrene
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The reaction of lithium salt of 5-methyl-5,10- dihydrophenazine anion with 4-nitrophenethyl bromide in 1,2- dimethoxyethane gave unexpected compounds, 1,2-bis[5-(10-methyl- 5,10-dihydrophenazinyl)]-1-(4-nitrophenyl)ethane and 1,4-bis(4- nitrophenyl)-1,4-b
- Sugimoto, Akira,Maruyama, Hideyuki,Takahashi, Wataru,Mizuno, Kazuhiko,Uehara, Kaku,Adachi, Tomohiro
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p. 849 - 856
(2007/10/03)
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- Preparation and Properties of Electron Donor Acceptor Complexes of the Compounds having Capto-dative Substituents
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In order to examine the "capto-dative" substitution-effect on the electrical conductivity, five compounds which have capto-dative substituents were prepared.Electron withdrawing (capto) group was nitro- or cyano-substituted phenyl and electron donating (dative) one was 5-methyl-5,10-dihydrophenazinyl moiety.The character of intramolecular electron donor acceptor complex of the five compounds were demonstrated by their uv spectra.Electron donor acceptor complexes of them with tetracyanoquinodimethane were prepared and their electrical resistivities were measured.
- Sugimoto, Akira,Kotani, Takeshi,Tsujimoto, Junko,Yoneda, Shigeo
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p. 435 - 438
(2007/10/02)
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- Chain Decomposition of Hydrogen Peroxide Induced by Catalytic Levels of Reduced 5-Methylphenazinium and Metal Ions: A Nonclassical Fenton System
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Catalytic levels of fully reduced 5-methylphenazinium (MPH) and metal ions induce a chain decomposition of H2O2 in N2-saturated aqueous benzoic acid solution, with concominant production of o-, m-, and p-hydroxybenzoic acids.The oxidant inducing the aromatic hydroxylations is the hydroxyl radical, produced in a one-electron, metal ion mediated reduction of H2O2.The rate of decomposition is zero order with respect to when the reaction is catalyzed by adventitious metal ions or by added FeIII or FeII.For FeIII in citrate buffer, the rate expression is -d/dt = k0(III>0 + a) where k = 2.7 + 103 M-1s-1 and a = 7.0 * 10-7 M.The reaction mechanism is essentially the same as for the classical Fenton system except that an added reducing agent is required to return the oxidized catalytic metal ions to its reduced state.Thus, the present system can be grouped with a number of other "nonclassical Fenton systems" such as the Udenfriend and Hamilton systems, which are capable of aromatic hydroxylations and which require both a catalytic metal ion and a reducing agent.
- Richter, Helen W.,Waddell, Walter H.
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p. 4630 - 4634
(2007/10/02)
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- Photochemistry of 5-Methylphenazinium Salts in Aqueous Solution. 2. Optical Flash Photolysis and Fluorescence Results and a Proposed Mechanism
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The photochemistry of 5-methylphenazinium (MP+) salts in aqueous solutions for pH 2-7 has been studied by using fluorescence, optical flash photolysis, and electron paramagnetic resonance (EPR) techniques.A complete mechanism has been proposed which accounts for all the known observations on this reaction.The fluorescence yield is ca. 1percent and independent of pH for pH>4 but drops sharply for pH2+(S1).This state also appears to be photochemically inert as the quantum yield of formation of MPH+. also drops for pH+(T1) has likely been detected by its triplet-triplet absorption and is found to have a lifetime in solution of ca. 0.5 ms.The triplet state is quenched efficiently by oxygen; however, oxygen does not quench to photochemistry; hence, it is concluded that photochemistry occurs via the excited n?* singlet state MP+(S1).The novel feature of the proposed mechanism is that the primary photochemical step is proposed to involve in the addition of water to MP+(S1) with the concomitant loss of a proton to form an adduct X.X is a strong oxidizing agent and appears to react as an OH radical addition reagent in its reactions with MP+, formate, and acetate.In the absence of added reagents, X reacts with MP+ to initiate a complex series of reactions.Most of the rate constants and some equilibrium constants have been determined for these reactions and are summarized in Table II.It is possible that this dye may be useful as a photochemical oxidizing agent in the sensitized photochemical decomposition of water.
- Chew, Vivian S. F.,Bolton, James R.,Brown, Robert G.,Porter, George
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p. 1909 - 1916
(2007/10/02)
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