- Asymmetric antracene derivatives having two naphthyl groups and organic light-emitting diode including the same
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The present invention relates to antracene derivatives represented by [Formula A] and [Formula B], and an organic light-emitting diode including the same. Substituents X_1 to X_14, Y, and Z are the same as defined in the detailed description.
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Paragraph 0425; 0434-0438
(2019/12/25)
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- Asymmetric antracene derivatives having two naphthyl groups and organic light-emitting diode including the same
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The present invention relates to an antracene derivative represented by the following [Formula A] or [Formula B], and an organic light-emitting diode including the same. Substituents X_1 to X_7 , Y, and Z are the same as defined in the detailed description of the invention.
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Paragraph 0415; 0424-0428
(2020/01/09)
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- Antracene derivatives having heteroaryl substituted naphthyl group and organic light-emitting diode including the same
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The present invention relates to an antracene derivative represented by the following [Formula A] and an organic light-emitting diode including the same. Substituents X_1 to X_7 , Y, and L are the same as defined in the detailed description of the invention.
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Paragraph 0285; 0294-0298
(2020/03/24)
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- Construction of Condensed Polycyclic Aromatic Frameworks through Intramolecular Cycloaddition Reactions Involving Arynes Bearing an Internal Alkyne Moiety
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Facile synthetic methods for condensed polycyclic aromatic compounds via aryne intermediates are reported. The generation of arynes bearing a (3-arylpropargyl)oxy group from the corresponding o-iodoaryl triflate-type precursors efficiently afforded arene-fused oxaacenaphthene derivatives, which were formed through intramolecular [2+4] cycloaddition. Extending the method to the generation of arynes bearing a 1,3-diyne moiety led to a continuous generation of naphthalyne intermediate through the hexadehydro Diels–Alder reaction involving the aryne triple bond. This novel type of aryne-relay chemistry enabled the synthesis of a unique aminoarylated oxaacenaphthene derivative and highly ring-fused anthracene derivatives.
- Yoshida, Suguru,Shimizu, Keita,Uchida, Keisuke,Hazama, Yuki,Igawa, Kazunobu,Tomooka, Katsuhiko,Hosoya, Takamitsu
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p. 15332 - 15335
(2017/10/18)
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- Organic light-emitting diode including aryl substituted antracene derivatives
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The present invention, in regards to an organic light emitting diode comprising a luminous layer and an electron transport layer between a first electrode and a second electrode, relates to an organic light emitting diode which includes one or more anthracene derivatives selected from compounds represented by chemical formula A below in the electron transport layer, and which includes one or more anthracene derivatives selected from compounds represented by chemical formula B below in the luminous layer. L_a, L_b, A, Y and m below are defined in the detailed description of the present invention.
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Paragraph 0343; 0352-0356
(2020/04/01)
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- Organic light-emitting diode including aryl substituted antracene derivatives
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The present invention refers to number 1 number 2 electrode and including unevenness on the between the electrodes in organic light emitting device, the light takeout efficiency to the derivative is represented by the following formula A 1 which is selected from includes indicates on the paper, the light emitting layer to said derivative is represented by the following formula B on the paper 1 which is selected from organic light emitting device including an anthracene derivative of relates to a A, X 1 to X 7, Q 1 to Q 7 are the same as defined in the detailed description of the invention.. [Formula A] [formula B]
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Paragraph 0244; 0253-0257
(2021/08/15)
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- Reductive cleavage of aryl O-carbamates to phenols by the Schwartz reagent. Expedient link to the directed ortho metalation strategy?
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A general, mild, and efficient method for the reductive cleavage of aryl O-carbamates to phenols, 1 → 2 using the Schwartz reagent is reported. The method is selective, tolerating a large number of functional groups; may be carried out by direct or by an economical in situ procedure; and, notably, establishes a synthetic connection to the directed ortho metalation strategy (Figure 1) allowing new entries into difficult to prepare contiguously substituted aromatics and heteroaromatics.
- Morin, Justin,Zhao, Yigang,Snieckus, Victor
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supporting information
p. 4102 - 4105
(2013/09/12)
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- Acid-catalyzed dehydration of naphthalene-cis-1,2-dihydrodiols: Origin of impaired resonance effect of 3-substituents
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Acid-catalyzed dehydrations of substituted naphthalene-cis-1,2-dihydrodiols occur with loss of the 1- or 2-OH group to form 2- and 1-naphthols, respectively. Effects of substituents MeO, Me, H, F, Br, I, and CN at 3-, 6-, and 7-positions of the naphthalene ring are consistent with rate-determining formation of β-hydroxynaphthalenium ion (carbocation) intermediates. For reaction of the 1-hydroxyl group the 3-substituents are correlated by the Yukawa-Tsuno relationship with ρ = -4.7 and r = 0.25 or by σp constants with ρ = -4.25; for reaction of the 2-hydroxyl group the 3-substituents are correlated by σm constants with ρ = -8.1. The correlations for the 1-hydroxyl imply a surprisingly weak resonance interaction of +M substituents (MeO, Me) with a carbocation reaction center but are consistent with the corresponding correlation for acid-catalyzed dehydration of 3-substituted benzene-cis-1,2-dihydrodiols for which ρ = -6.9 and r = 0.43. Substituents at the 6- and 7-positions of the naphthalene rings by contrast are correlated by σ+ with ρ = -3.2 for reaction of the 1-hydroxyl group and ρ = -2.7 for reaction of the 2-hydroxyl group. The unimpaired resonance implied by these substituent effects appears to be inconsistent with a previous explanation of the weak resonance of the 3-substituents in terms of imbalance of charge development and/or nonplanarity of the benzenium ring in the transition state. An alternative possibility is that the adjacent hydroxyl group interferes sterically with conjugation of +M substituents. "Hyperaromaticity" of the arenium ion intermediates does not appear to be a factor influencing this behavior.
- Kudavalli, Jaya Satyanarayana,Boyd, Derek R.,Sharma, Narain D.,More O'Ferrall, Rory A.
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supporting information; experimental part
p. 9338 - 9343
(2012/01/03)
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- Schwartz Reagents: Methods of In Situ Generation and Use
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Embodiments of the invention provide a method of using Schwartz Reagent, Cp2Zr(H)Cl, without accumulating or isolating it. Methods provide mixtures of Cp2ZrCl2, reductants that selectively reduce Cp2ZrCl2, and substrates. After reaction of Cp2ZrCl2 and the reductant, an intermediate reduction product is formed, apparently Schwartz Reagent. The in situ Schwartz Reagent then selectively reduces certain functional groups on the substrate. Substrates include tertiary amides, tertiary benzamides, aryl O-carbamates, and heteroaryl N-carbamates, which are reduced to aldehydes, benzaldehydes, aromatic alcohols, and heteroaromatics, respectively. Compared to prior methods, reagents are inexpensive and stable, reaction times are short, and reaction temperature in certain cases is conveniently room temperature. It has been estimated that using the in situ method described herein instead of synthesized or commercially obtained Schwartz Reagent provides a 50% reduction in cost.
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Page/Page column 7; 15
(2010/06/19)
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- Diaminopyrimidines as P2X3 and P2X2/3 modulators
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Compounds of the formula I: or pharmaceutically acceptable salts thereof, wherein A, D, E, G, J, X, Y, Z R6, R7 and R8 are as defined herein. Also provided are methods of using the compounds for treating diseases mediated by a P2X3 and/or a P2X2/3 receptor antagonist and methods of making the compounds.
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Page/Page column 20
(2010/11/26)
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- CHIRAL LIGANDS, THEIR PREPARATION AND USES THEREOF IN ASSYMETRIC REACTIONS
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A novel class of chiral ligands represented by a structure of Formula (I): wherein R1, R2, R3, R4 and R5 are independently selected from the group consisting of hydrogen, halogen, C1-10 alk
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Page/Page column 43-44
(2008/06/13)
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- Phosphene oxide-terminated allene-ene-yne DNA-cleaving, antitumor and antibiotic molecules
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Phosphine oxide-terminated allene-ene-yne compounds are disclosed that possess DNA-cleaving, antimicobial and tumor growth-inhibiting properties. Methods of making and using those compounds are also disclosed.
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- Golfomycin derivatives: fused ring cyclodecadiyne derivatives having DNA-cleaving properties and antitumor activity
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5-Hydroxy-benzo-(1',2')-cyclodeca-2,7-diyne-1-one and derivatives thereof and related fused ring diyneone macrocyclic compounds are disclosed. The compounds possess DNA-cleaving, antibiotic and tumor growth-inhibiting properties. Methods of making and using the same are also disclosed.
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