- Catalytic Boration of Alkyl Halides with Borane without Hydrodehalogenation Enabled by Titanium Catalyst
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An unprecedented and general titanium-catalyzed boration of alkyl (pseudo)halides (alkyl-X, X=I, Br, Cl, OMs) with borane (HBpin, HBcat) is reported. The use of titanium catalyst can successfully suppress the undesired hydrodehalogenation products that prevail using other transition-metal catalysts. A series of synthetically useful alkyl boronate esters are readily obtained from various (primary, secondary, and tertiary) alkyl electrophiles, including unactivated alkyl chlorides, with tolerance of other reducing functional groups such as ester, alkene, and carbamate. Preliminary studies on the mechanism revealed a possible radical reaction pathway. Further extension of our strategy to aryl bromides is also demonstrated.
- Wang, Xianjin,Cui, Penglei,Xia, Chungu,Wu, Lipeng
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supporting information
p. 12298 - 12303
(2021/05/07)
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- Iodide ion receptors: shape-persistent macrocycles ofsyn/anticonfigurations
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This article reports a pair of rigid iodide ion macrocyclic receptors ofsyn/anticonfigurations. Single crystal X-ray analysis confirms the structure of thesyn-isomers, and1H Nuclear Magnetic Resonance (1H NMR) titration and ultraviolet-visible (UV-Vis) absorption are used to study the binding affinity of the isomers to halogen ions. Both the isomers show colorimetric and fluorescence recognition towards iodide anions in dichloromethane solution. By solving the association constants, it can be concluded that the interaction between theanti-isomer and iodide ions is relatively weaker than that in thesyn-isomer, and thesyn-isomer has much better recognition selectivity for I?in CH2Cl2than theanti-isomer. The results of the theoretical calculations show thatsyn/anticonfigurations bring about different orientations of the alkyl chains, leading to the larger steric hindrance of theanti-isomer to hinder the combination with iodide ions, and thesynconfigurations with relatively smaller steric hindrance can enhance the binding between the isomers and the iodide anions. A shape persistent macrocycle with a bound conformation can be looked at as a special case of conformational selection, and the results of this study indicate a local induced fit mechanism following a conformational selection in the recognition of iodide anions, and we anticipate that this work will help to understand these two dominant binding mechanisms in molecular recognition and have a certain reference value for designing better anion receptors.
- Zhang, Guang-Wei,Xiang, Jia-Yin,Zhong, Tao-Tao,Zhi, Xin-Ru,Gao, Chuang,Huang, Wei,Yuan, Shuai,Xie, Ling-Hai,Huang, Wei
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supporting information
p. 6796 - 6802
(2021/04/26)
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- TRIPHENYLENE COMPOUND AND ORGANIC LIGHT EMITTING ELEMENT COMPRISING THE SAME
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The present invention relates to a triphenylene compound and an organic light emitting device including the same.
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Paragraph 0064; 0068-0070
(2021/04/20)
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- An electroluminescent compound and an electroluminescent device comprising the same
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The present invention relates to an organic luminescent compound represented by chemical formula 1 and an organic electroluminescent device including the same. The organic luminescent compound according to the present invention has excellent luminous efficiency and lifetime properties of material, and thus, enables the manufacturing of an organic electroluminescent device having excellent luminous efficiency while having power efficiency and long lifetime properties. [Chemical formula 1].
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Paragraph 0273; 0304-0309
(2020/12/16)
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- Facile and economical Miyaura borylation and one-pot Suzuki–Miyaura cross-coupling reaction
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Facile and economical method for Miyaura borylation reaction between B2pin2 and aryl bromides is reported. The catalytic system containing 2 mol% PdCl2(PPh3)2 and KOAc serves to enable borylations to occur under solvent-free and atmospheric conditions. The developed protocol can be applied to synthesize symmetrical and unsymmetrical biaryls via one-pot two-step Suzuki–Miyaura cross-coupling reaction and also offers the up-scalability.
- Boontiem, Phongsakorn,Kiatisevi, Supavadee
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- Dynamic resonance aggregation-induced emission material for explosive detection as well as preparation method and application of dynamic resonance aggregation-induced emission material
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The invention discloses a dynamic resonance aggregation-induced emission material for explosive detection as well as a preparation method and an application of the dynamic resonance aggregation-induced emission material. The dynamic resonance aggregation-induced emission material capable of being used for explosive detection provided by the invention is based on an N-P=X dynamic resonance structure system, and a typical aggregation-induced emission group-tetraphenylethylene is introduced, so that the material has the advantages of simple synthesis, high yield, high quantum efficiency and the like.
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Paragraph 0068; 0069; 0070
(2020/08/29)
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- A Monophosphine Ligand Derived from Anthracene Photodimer: Synthetic Applications for Palladium-Catalyzed Coupling Reactions
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Herein, we present an air-stable dianthracenyl monophosphine ligand (diAnthPhos) which can be prepared in two steps from commercially available anthracene derivatives. The ligand exhibits excellent efficiency for palladium-catalyzed coupling reactions. In particular, Miyaura borylation of heterocycle-containing electrophiles can be facilitated employing the diAnthPhos ligand with a broad substrate scope and low catalyst loading. The valuable synthetic utility of the new ligand is further demonstrated by a one-pot Miyaura borylation/Suzuki coupling protocol for heteroaryl-containing substrates.
- Wang, Xin,Liu, Wei-Gang,Tung, Chen-Ho,Wu, Li-Zhu,Cong, Huan
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supporting information
p. 8158 - 8163
(2019/09/07)
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- A-D-A type nano-corner lattice with thermal activation delayed fluorescence properties and preparation method and application thereof
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The invention discloses an A-D-A type nano-corner lattice with thermal activation delayed fluorescence properties and a preparation method and the application of the A-D-A type nano-corner lattice with the thermal activation delayed fluorescence properties. The nano-corner lattice is based on fluorene or diazafluorene and has a rigid geometric structure. A-D-A type nano-corner lattice molecules exhibit cyclic characteristics and unique and excellent TADF characteristics; the A-D-A type nano-corner lattice is cheap in raw materials, easy in preparation, mild in reaction conditions and unique inperformances and high in thermal and electrochemical stability and spectral stability; the materials are novel in structure and excellent in performances and can be synthesized by an aromatic nucleophilic substitution reaction, the synthesis method is simple and the yield is high; an organic electroluminescent device can be prepared by a solution processing method and taken as a light-emitting layer material, so that the A-D-A type nano-corner lattice has the advantages of high luminous efficiency, low efficiency roll-off and capability of effectively reducing the turn-on voltage and the like. The A-D-A type nano-corner lattice disclosed by the invention is expected to become a new generation of new practical organic molecular optoelectronic materials, and has a very good application prospect in the fields of the organic electroluminescent device and the like.
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Paragraph 0072-0074
(2019/09/17)
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- A copolymer containing imidazole salt ion iridium complex and its preparation and use (by machine translation)
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The invention relates to a preparation method and an application of an ion type iridium complex containing imidazolium salt. The iridium complex comprises a cyclometalated ligand and an auxiliary ligand with an active nitrogen-hydrogen structure. The imidazolium salt ion type iridium complex has excellent luminescence property and high color purity, and can realize the regulation from red light to blue-green light by changing counter ions or under the electric field stimulating action. The iridium complex can be applied to sensors and electroluminescence devices.
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- One kind has electronic to the receptor structure of vinyl polymer main body material and its preparation and application method (by machine translation)
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The invention belongs to the field of photoelectric functional materials, in particular to a kind of by the electron donor group with the electron acceptor group are respectively functional modification of the PVK vinyl polymer main body material, and based on this polymer a series of optical, electrical, electrochemical performance characterization, we would be applied to the organic light-emitting field, has been succeeded in preparing a series of high-efficiency light-emitting device. Wherein the polymer material of the main body and PTPACzPO PVPPOK as an example, their traditional hole transporting material (polyvinyl carbazole) PVK as the skeleton, through a series of molecular modification, to obtain a more superior to the PVK carrier transmission performance. (by machine translation)
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- ORGANIC LIGHTING-EMITTING COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME
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The present invention relates to a novel compound and an organic electroluminescent device containing the same. The compound of the present invention improves an organic electroluminescent element in terms of luminous efficiency, driving voltage, lifespan, and the like by being used for an organic material layer, preferably a light emitting layer, a hole transport layer, an electron blocking layer or a light-emission assisting layer of an organic electroluminescent device.COPYRIGHT KIPO 2015
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Paragraph 0097-0099; 0107-0109
(2016/11/28)
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- CYCLIC AZINE COMPOUND, METHOD FOR PRODUCING THE SAME, AND ORGANIC ELECTROLUMINESCENT ELEMENT CONTAINING THE SAME
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PROBLEM TO BE SOLVED: To provide a cyclic azine compound which allows an organic electroluminescent element to be driven for a long time, and to provide an organic electroluminescent element using the cyclic azine compound as an electron transport material. SOLUTION: The cyclic azine compound is represented by formula (1) (Cz represents an (n+1)-valent carbazole group or the like; Ar1 and Ar2 each represent an aromatic hydrocarbon group; Ar3 represents an arylene group; Ar4 represents a nitrogen-containing heteroaryl or the like; Y and Z each represent a nitrogen atom or CH; and n represents an integer of 1 or more) (Ar5 represents an aryl group; Ar6 represents a nitrogen-containing heteroaryl group; and m represents an integer of 1 or more). COPYRIGHT: (C)2015,JPOandINPIT
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Paragraph 0132
(2018/09/25)
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- FUSED BICYCLOHETEROCYCLE SUBSTITUTED QUINUCLIDINE DERIVATIVES
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Compounds of formula (I) wherein n is 0, 1, or 2; A is N or N+-O-; X is O, S, -NH-, and -N-alkyl-; Ar1 is a 6-membered aromatic ring; and Ar2 is a fused bicycloheterocycle. The compounds are useful in treating conditions or disorders prevented by or ameliorated by a7 nAChR ligands. Also disclosed are pharmaceutical compositions having compounds of formula (I) and methods for using such compounds and compositions.
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Page/Page column 94-95
(2010/11/08)
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- Fused bicycloheterocycle substituted quinuclidine derivatives
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Compounds of formula (I) wherein n is 0, 1, or 2; A is N or N+—O—; X is O, S, —NH—, and —N-alkyl-; Ar1 is a 6-membered aromatic ring; and Ar2 is a fused bicycloheterocycle. The compounds are useful in treating conditions or disorders prevented by or ameliorated by α7 nAChR ligands. Also disclosed are pharmaceutical compositions having compounds of formula (I) and methods for using such compounds and compositions.
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- Fused bicycloheterocycle substituted quinuclidine derivatives
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Compounds of formula (I) wherein n is 0, 1, or 2; A is N or N+—O?; X is O, S, —NH—, and —N-alkyl-; Ar1 is a 6-membered aromatic ring; and Ar2 is a fused bicycloheterocycle. The compounds are useful in treating conditions or disorders prevented by or ameliorated by α7 nAChR ligands. Also disclosed are pharmaceutical compositions having compounds of formula (I) and methods for using such compounds and compositions.
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Page/Page column 38
(2010/02/12)
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