- Intramolecular Electrophilic Cyclization Approach to 6-Substituted Naphtho[2,1- b]benzofurans: Novel Dual-State Emissive Fluorophores with Blue Emission
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A regiospecific synthesis of naphtho[2,1-b]benzofurans with a substituent at the C6 position was achieved via intramolecular 6-endo-dig electrophilic cyclization under acidic conditions to construct the central aromatic C ring. Screening of the synthesize
- Singh, Dileep Kumar,Jang, Kyungkuk,Kim, Jinhwang,Lee, Jeeyeon,Kim, Ikyon
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p. 408 - 416
(2019/05/01)
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- Naphthylbenzofuran derivative and preparation method thereof
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The invention belongs to the technical field of organic synthesis and particularly relates to a naphthylbenzofuran derivative and a preparation method thereof. The preparation method comprises that a1-bromo-2-naphthol derivative and a phenylboronic acid derivative undergo a reaction to produce an intermediate, the intermediate undergoes an intramolecular dehydration and ring-forming reaction under the action of cesium carbonate to produce the naphthylbenzofuran derivative. The naphthylbenzofuran and its derivative can be used as important synthesis intermediates of functional organic semiconductors such as organic electroluminescence devices, organic solar batteries, organic lasers, optical switches and ion detectors. The modified compound can be used as light-emitting host and guest materials, a carrier transport material and an exciton-blocking material in organic electroluminescent devices. The invention can provide the naphthylbenzofuran derivative with the advantages of simple processes, low synthesis condition requirements, high synthesis yield, industrial large-scale production feasibility and good economic benefits and the preparation method thereof.
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Paragraph 0033; 0035
(2018/07/06)
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- LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE
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A novel light-emitting element is provided. A light-emitting element with a long lifetime is provided. A light-emitting element with high emission efficiency is provided. A novel organic compound is provided. A novel organic compound having a hole-transport property is provided. A novel hole-transport material is provided. A hole-transport material including an organic compound having a substituted or unsubstituted benzonaphthofuran skeleton and a substituted or unsubstituted amine skeleton is provided. A light-emitting element using the hole-transport material is provided. An organic compound in which an amine skeleton including two aromatic hydrocarbon groups having 6 to 60 carbon atoms is bonded to the 6- or 8-position of the benzonaphthofuran skeleton is provided.
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Paragraph 0343; 0344; 0364
(2017/08/24)
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- ORGANIC COMPOUND, LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC APPLIANCE, AND LIGHTING DEVICE
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An organic compound represented by General Formula (G1) that emits blue light with high color purity and has a long lifetime is provided as a novel substance. The organic compound is a fluorescent organic compound having a structure in which benzonaphthofuranylamine is bonded to the 1-position and the 6-position of a pyrene skeleton.
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Paragraph 0260; 0261; 0262
(2015/02/19)
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- HETEROCYCLIC COMPOUND, LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE
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A novel heterocyclic compound that can be used as a host material in which a light-emitting substance is dispersed. A light-emitting element having a long lifetime. A heterocyclic compound in which a substituted or unsubstituted dibenzo[f,h]quinoxalinyl group is bonded to a substituted or unsubstituted arylene group having 6 to 25 carbon atoms which is bonded to any one of the 8-11 positions of a substituted or unsubstituted benzo[b]naphtho[1,2-d]furan skeleton.
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Paragraph 0303; 0304; 0305
(2015/03/16)
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- Organoboron Compound and Method for Manufacturing the Same
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To provide a novel organoboron compound which is useful as a reactant of organic synthesis. To provide a method for manufacturing the organoboron compound. A novel organoboron compound represented by General Formula (G1) below is provided. Note that in General Formula (G1), R1 to R9 separately represent any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, and an aryl group having 6 to 16 carbon atoms. R10 and R11 separately represent hydrogen or an alkyl group having 1 to 6 carbon atoms, and R10 and R11 may be bonded with each other to form a ring. Further, X represents an oxygen atom or a sulfur atom.
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