- Preparation method of monohalogenated phenylboronic acid
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The invention relates to the technical field of chemical synthesis, and particularly discloses a preparation method of monohalogenated phenylboronic acid. The preparation method comprises the following steps of: by taking dihalogenated benzene as a raw material and a mixture of lithium salt and alkaline ionic liquid as a catalyst, carrying out Grignard exchange with R1MgCl to generate monohalogenated phenyl magnesium chloride, reacting with B (OR) 3 to generate monohalogenated phenyl borate, and hydrolyzing under acidic conditions to obtain monohalogenated phenylboronic acid. The HPLC (High Performance Liquid Chromatography) content of the monohalogenated phenylboronic acid prepared by the method is greater than 99.5%; the total yield of the product is greater than 80%, the contents of monohalogenated phenylboronic acid and phenyldiboronic acid impurities of another halogen are both less than 0.003%, the requirements of modern fine chemical synthesis are completely met, the raw materials are easily available, the operation is simple, the safety is high, and the industrial production of monohalogenated phenylboronic acid is realized.
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Paragraph 0088-0090
(2020/09/20)
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- Condensed fluorene derivative comprising heterocyclic ring
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The present invention relates to a condensed fluorene derivative comprising a heterocyclic ring and, more particularly, to an intermediate product for manufacturing a heterocyclic ring compound which can show excellent luminance and luminous efficiency when used as an organic light emitting material, while exhibiting excellent element characteristics with a long lifespan.COPYRIGHT KIPO 2020
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Paragraph 0324-0330
(2019/12/25)
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- Effective Utilization of Flow Chemistry: Use of Unstable Intermediates, Inhibition of Side Reactions, and Scale-Up for Boronic Acid Synthesis
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Flow chemistry processes for boronic acid syntheses utilizing lithiation-borylation have been developed. The side reactions in the lithiation step that occur in batch were suppressed, and unstable lithium intermediates were handled safely. Flow technology was applied to several kinds of boronic acid syntheses, and scale-up was successfully conducted to allow kilogram-scale production. Some of the key benefits of flow flash chemistry were utilized, both to avoid side reactions and to enable dianion chemistry that is difficult to perform successfully in batch reactions. The examples showed further perspectives on the utility of flow technologies for process development.
- Usutani, Hirotsugu,Cork, David G.
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p. 741 - 746
(2018/06/11)
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- Organic high molecular compound and application thereof
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The invention discloses an organic high molecular compound and application thereof. The general formula of the compound is shown in the description. The compound is can be applied to an organic electroluminescent device, such as a hole injection layer material, a hole transmission layer material, an electron stopping layer material, a light-emitting layer material and a covering layer material. Compared with the prior art, the organic high molecular compound has the following advantages that (1) the organic high molecular compound disclosed by the invention can be used as the hole injection layer material, the hole transmission layer material, the electron stopping layer material, the light-emitting layer material containing a green phosphorescent or a red fluorescent main body substance and the like and the covering layer material, so that the organic high molecular compound is applied to preparation of the organic electroluminescent device; (2) the driving voltage can be reduced, theluminous efficiency, the brightness, the thermal stability and the color purity are improved and the service life of the device is prolonged; (3) the organic electroluminescent device prepared by adopting the compound disclosed by the invention has the advantages of high efficiency and long service life. The formula is shown in the description.
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Paragraph 0083-0087
(2018/03/26)
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- Metal complex containing carbazoles connected Phenyl-pyridine, it's preparation method and it's applications
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PURPOSE: A phenyl-pyridine metal complex compound which is connected with carbazole structure is provided to enhance high electroluminescence(EL) intensity at 700-750 nm. CONSTITUTION: A metal complex compound contains a phenylpyridine structure which is connected with carbazole structure of chemical formula 1. In chemical formula 1, M is metal having an atom weight of 40 or more; X-Y is auxiliary ligand; R1 is alkyl of 1-16 carbon atoms or alkyl ether group of 1-16 carbon atoms; and R2 and R3 are F or CF_3 each. A light emitting device contains the metal complex compound. A sensor is manufactured using the light emitting device.
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Paragraph 0026-0027
(2017/04/03)
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- Condensed fluorene derivative comprising heterocyclic ring
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The present invention relates to a condensed fluorene derivative comprising a heterocyclic ring and, more particularly, to an intermediate product for manufacturing a heterocyclic ring compound which can show excellent luminance and luminous efficiency when used as an organic light emitting diode, while having excellent element characteristics with long lifespan. The heterocyclic ring compound of the present invention is represented by chemical formula A and chemical formula B.COPYRIGHT KIPO 2016
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Paragraph 0324-0330
(2016/10/08)
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- CONDENSED CYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
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A condensed cyclic compound represented by Formula 1: An organic light-emitting device including a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, and further including at least one of the condensed cyclic compounds of Formula 1.
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Paragraph 0376; 0377; 0378; 0379
(2016/11/02)
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- Heterocyclic compound comprising aromatic amine group and organic light-emitting diode including the same
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The present invention relates to a heterocyclic compound comprising an aromatic amine group and an organic light emitting device including the same and, more specifically, to a heterocyclic compound, which has excellent luminance, luminance efficiency, and outstanding long lifespan characteristics when being used as an organic light emitting material. In addition, the present invention further relates to an organic light emitting device including the same.COPYRIGHT KIPO 2016
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Paragraph 0862-0867
(2016/10/07)
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- Farnesyl transferase inhibitors, their preparation, the pharmaceutical compositions which contain them and their use in the preparation of medicaments
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Novel products of formula (I), their preparation, the pharmaceutical compositions which contain them and their use in the preparation of medicaments. In the formula (I), the following substituents are among the preferred: Ar represents a substituted or co
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