- Synthesis method of substituted dibenzothiophene compound
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The invention belongs to the technical field of organic synthesis, and particularly discloses a synthesis method of a substituted dibenzothiophene compound. The method comprises the following steps: reacting halogenated substituted biphenyl with an organic strong base at a low temperature, reacting with ethanedithiol to obtain a high-purity key intermediate mercaptobiphenyl, and carrying out a coupling reaction under the action of a catalyst to obtain the substituted dibenzothiophene compound. The method provided by the invention has the advantages of low raw material cost, mild reaction conditions, short reaction time, simple post-treatment, single reaction product, few byproducts, no impurity difficult to remove, simple process operation, easy obtaining of high-purity products, suitability for large-scale production of the process and the like.
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- Preparation method of tertiary amine compound
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The invention provides a preparation method of a tertiary amine compound, and belongs to the technical field of organic chemistry. The preparation method of the tertiary amine compound comprises the following steps: performing a carbon-nitrogen coupling reaction on a compound of chemical formula 2 and a compound of chemical formula 3 to obtain a compound of chemical formula 4; and carrying out thecarbon-nitrogen coupling reaction on the compound of chemical formula 4 and a compound of chemical formula 5 to obtain the compound of chemical formula 1, wherein the chemical formula 1, the chemicalformula 2, the chemical formula 3, the chemical formula 4 and the chemical formula 5 are shown in the description.
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- Cyclization of 2-Biphenylthiols to Dibenzothiophenes under PdCl2/DMSO Catalysis
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A palladium-catalyzed synthesis of dibenzothiophenes from 2-biphenylthiols is described. This highly efficient reaction employs a simple PdCl2/DMSO catalytic system, in which PdCl2 is the sole metal catalyst and DMSO functions as an oxidant and solvent. This transformation has broad substrate scope and operational simplicity and proceeds in high yield. The synthetic utility was demonstrated by the facile synthesis of helical dinapthothiophene 3 and an eminent organic semiconductor DBTDT 4. Importantly, highly strained trithiasumanene 5, a buckybowl of considerable synthetic challenge, was observed under this catalytic system.
- Zhang, Tao,Deng, Guigang,Li, Hanjie,Liu, Bingxin,Tan, Qitao,Xu, Bin
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p. 5439 - 5443
(2018/09/13)
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- NOVEL TRIAZINE COMPOUND, AND ORGANIC ELECTRONIC ELEMENT AND PLANT-GROWING LIGHTING THAT USE THE SAME
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PROBLEM TO BE SOLVED: To provide a triazine compound which has a high triplet energy level and excellent heat resistance, and can be used as an organic electronic element material realizing an element with high efficiency, low voltage and a long life. SOLUTION: In the triazine compound, as represented by the general formula [1] in the figure, a triazine backbone moiety is linked to a dibenzofuran or dibenzothiophene backbone moiety via a biphenyl backbone moiety, where X is an oxygen atom or sulfur atom. SELECTED DRAWING: None COPYRIGHT: (C)2018,JPO&INPIT
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- Triarylated amine derivative and organic electroluminescence device with same
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The invention discloses a triarylated amine derivative and an organic electroluminescence device with the same, and relates to the technical field of organic photoelectric materials. The triarylated amine derivative has a large conjugated system, thereby having high hole mobility and presenting good hole transmissibility; in addition, the triarylated amine derivative has high thermal stability anddissolubility and is beneficial for material film forming. The organic electroluminescence device comprises a cathode, an anode and one or more organic matter layers. The organic matter layers are located between the cathode and the anode. At least one of the organic matter layers contains the triarylated amine derivative. The organic electroluminescence device has low driving voltages, high light-emitting efficiency, light-emitting luminance and long service life.
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- Dual gold and photoredox catalysed C-H activation of arenes for aryl-aryl cross couplings
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A mild and fully catalytic aryl-aryl cross coupling via gold-catalysed C-H activation has been achieved by merging gold and photoredox catalysis. The procedure is free of stoichiometric oxidants and additives, which were previously required in gold-catalysed C-H activation reactions. Exploiting dual gold and photoredox catalysis confers regioselectivity via the crucial gold-catalysed C-H activation step, which is not present in the unselective photocatalysis-only counterpart.
- Gauchot,Sutherland,Lee
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p. 2885 - 2889
(2017/04/04)
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- Diaryl ring fused sulfides and diaryl ring fused selenides, and synthesis method and application thereof
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The invention discloses a synthesis method of diaryl ring fused sulfides represented by formula (B) and diaryl ring fused selenides represented by formula (C). The method is characterized in that a reaction of a reaction raw material high-iodine salt is carried out in dimethyl sulfoxide under the action of an inorganic sulfuration reagent or selenylation reagent and an alkali at 60-100 DEG C to obtain the diaryl ring fused sulfides and the diaryl ring fused selenides. Sulfur or selenium is introduced in the later stage in the presence of a nonmetal catalyst, so poisoning of sulfur to a metal catalyst in the early stage reaction is avoided; the above inorganic sulfur source is nontoxic and odorless; and two aryl groups in the high-iodine salt are fully used, so the atom economy and the greenness of the method are fully shown. The diaryl ring fused sulfides and the diaryl ring fused selenides prepared through the method can be applied to synthesize photoelectric materials BTBT and BTBS.
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Paragraph 0057; 0058; 0059; 0060
(2017/06/20)
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- Cu(ii)-catalyzed sulfide construction: both aryl groups utilization of intermolecular and intramolecular diaryliodonium salt
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A sulfur-iodine exchange protocol of diaryliodonium salts with inorganic sulfur salt was developed. Both aryl groups in the diaryliodonium salt were fully exerted in this transformation. Five- to eight-membered sulfur-containing heterocycles were achieved. Note that [1]benzothieno-[3,2-b][1]benzothiophene (BTBT) (an organic field-effect transistor (OFET) material) and Zaltoprofen were efficiently established through this method.
- Wang, Ming,Wei, Jianpeng,Fan, Qiaoling,Jiang, Xuefeng
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supporting information
p. 2918 - 2921
(2017/03/15)
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- Transition-Metal-Free Diarylannulated Sulfide and Selenide Construction via Radical/Anion-Mediated Sulfur-Iodine and Selenium-Iodine Exchange
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A facile, straightforward protocol was established for diarylannulated sulfide and selenide construction through S-I and Se-I exchange without transition metal assistance. Elemental sulfur and selenium served as the chalcogen source. Diarylannulated sulfides were systematically achieved from a five- to eight-membered ring. A trisulfur radical anion was demonstrated as the initiator for this radical process via electron paramagnetic resonance (EPR) study. OFET molecules [1]benzothieno[3,2-b][1]benzothiophene (BTBT) and [1]benzothieno[3,2-b][1]benzoselenophene (BTBS) were efficiently established.
- Wang, Ming,Fan, Qiaoling,Jiang, Xuefeng
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supporting information
p. 5756 - 5759
(2016/11/17)
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- Diaryl thioether compound, and synthetic method and application thereof
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The invention discloses a diaryl thioether compound, and a synthetic method and an application thereof. Various diaryl thioether compounds can be obtained through a reaction of a reaction raw material high iodine salt in dimethyl sulfoxide at 60-100DEG C under the action of an odorless sulfuration reagent, an alkali, a metal catalyst and a ligand for 3-12h. Sulfur is introduced in the later stage, so poisoning of sulfur to the metal catalyst and incompatibility of an oxidant in the early stage reaction are avoided; the above inorganic sulfur source is nontoxic and odorless; and two aryl groups in the high iodine salt are fully used, so the atom economy of the method is fully shown. The diaryl thioether compound prepared through the method can be further used to synthesize a photoelectric material BTBT and an anti-inflammatory drug zaltoprofen.
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Paragraph 0130-0134
(2018/02/04)
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