17788-94-2

Basic information

• Product Name: 4,4''-Dibromo-p-terphenyl
• Synonyms: 4,4''-DIBROMO-P-TERPHENYL;4,4''-Dibromo-1,1':4',1''-terphenyl;DBTP;1,1':4',1''-Terphenyl,4,4''-dibromo-
• CAS NO: 17788-94-2
• Molecular Formula: C₁₈H₁₂Br₂
• Molecular Weight: 388.1
• EINECS: 1312995-182-4
• Mol File: 17788-94-2.mol

Chemical Properties

• Melting Point: 315 °C
• Boiling Point: 481.718 °C at 760 mmHg
• Flash Point: 285.478 °C
• Appearance: /
• Density: 1.538 g/cm³
• Storage Temp.: Sealed in dry,Room Temperature
• CAS DataBase Reference: 4,4''-Dibromo-p-terphenyl(CAS DataBase Reference)
• NIST Chemistry Reference: 4,4''-Dibromo-p-terphenyl(17788-94-2)
• EPA Substance Registry System: 4,4''-Dibromo-p-terphenyl(17788-94-2)

Safety Data

• Statements: 22
• Safety Statements: 26
• RIDADR: 3152
• HazardClass: 9
• PackingGroup: II
• Hazardous Substances Data: 17788-94-2(Hazardous Substances Data)

Usage

Chemical Properties

White to light yellow solid

Uses

4,4''''-Dibromo-p-terphenyl

Upstream product

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• 19314-23-9 N-(4-propionylamino-phenyl)-propionamide 
• 857620-57-6 N-biphenyl-4-yl-N-nitroso-acetamide 
• 857579-30-7 N,N'-dinitroso-N,N'-p-phenylene-bis-formamide 
• 46893-09-8 N,N'-dinitroso-N,N'-p-phenylene-bis-acetamide 
• 854676-81-6 N,N'-dinitroso-N,N'-p-phenylene-bis-propionamide 

Downstream Products

• 61794-69-2 C₇₆H₅₄O₂ 
• 586-76-5 4-Bromobenzoic acid 
• 668493-37-6 4-bromo-4''-(N,N-diphenylamino)terphenyl 
• 728039-64-3 4-bromo-N,N-dibiphenylyl-4-amino-p-terphenyl 
• 947257-44-5 4,4''-bis(tricyclohexyltin)-1,1':4',1''-terphenyl 
• 1151782-31-8 N,N'-diphenyl-N,N'-bis(3-methoxyphenyl)-[1,1':4'1-terphenyl]-4,4-diamine 
• 1264218-32-7 4,4''-bis(2,3,4,5-tetramethylcyclopenta-1,3-dienyl)-p-terphenyl 
• 757235-41-9 N4,N4″-di(naphthalen-2-yl)-N4,N4″-diphenyl-[1,1′:4′,1″-terphenyl]-4,4″-diamine 

Relevant articles and documents

Antiaromaticity in distal bisfluorenyl dications separated by multiple discrete spacer units

(Chemical Equation Presented) The effect of spacers on the antiaromaticity of bisfluorenyl dications was examined. For systems such as 4a-c in which extensive delocalization of the positive charge through the π-system is not possible, a relationship based primarily on localized hyperconjugation as well as the distance between the fluorenyl systems and their antiaromaticity was demonstrated. Dications 2a-c and 3a-c also show the relationship, but it is further modulated by delocalization through the π-system. Calculated assessment of antiaromaticity was supported by experimental shifts for 2a,b and 3a-c.

Synthesis and biological evaluation of novel bis-quaternary ammonium compounds with p-terphenyl spacer

Novel bis-quaternary ammonium compounds with a p-terphenyl spacer between two pyridinium heads were synthesized. Hit compound with C8H17 aliphatic substituent is superior to known benzalkonium chloride, miramistin and chlorhexidine bisgluconate in MIC values against five pathogenic bacteria.

Triptycenyl Sulfide: A Practical and Active Catalyst for Electrophilic Aromatic Halogenation Using N-Halosuccinimides

A Lewis base catalyst Trip-SMe (Trip = triptycenyl) for electrophilic aromatic halogenation using N-halosuccinimides (NXS) is introduced. In the presence of an appropriate activator (as a noncoordinating-anion source), a series of unactivated aromatic compounds were halogenated at ambient temperature using NXS. This catalytic system was applicable to transformations that are currently unachievable except for the use of Br2 or Cl2: e.g., multihalogenation of naphthalene, regioselective bromination of BINOL, etc. Controlled experiments revealed that the triptycenyl substituent exerts a crucial role for the catalytic activity, and kinetic experiments implied the occurrence of a sulfonium salt [Trip-S(Me)Br][SbF6] as an active species. Compared to simple dialkyl sulfides, Trip-SMe exhibited a significant charge-separated ion pair character within the halonium complex whose structural information was obtained by the single-crystal X-ray analysis. A preliminary computational study disclosed that the πsystem of the triptycenyl functionality is a key motif to consolidate the enhancement of electrophilicity.

Novel compound and organic light emitting device comprising the same

The present invention provides a novel compound and an organic light emitting device using the same, wherein the compound is represented by formula 1. The compound can improve lifespan characteristics in the organic light emitting device.COPYRIGHT KIPO 2020

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Synthesis of 4, 4' - dibromo P-terphenyl method (by machine translation)

The invention relates to a method for synthesizing 4, 4 '- dibromo P-terphenyl of the method, the method comprises: in 100 - 110 °C temperature, so that the terphenyl, liquid bromine and at least one organic solvent, in the presence of a catalyst reaction under the condition of 24 - 48 hours, to obtain the 1st reaction mixture, wherein the terphenyl and bromine molar ratio of 1: (2.25 - 2.75); cooling to 25 - 30 °C, using methanol after washing, filtering to obtain 1st crude product; purifying the crude product 1st, to obtain the product 4, 4' - dibromo P-terphenyl. Beneficial effect of the application is not using any catalyst, yield is still as high as 70%, reduces the cost, simplifies the after-treatment process, for the realization of the 4, 4' - dibromo P-terphenyl for industrial production of the technical support. (by machine translation)

Synthesis of p-Quinquephenyl from E,E-1,4-Bis(4-bromophenyl)-1,3-butadiene

p-Quinquephenyl was synthesized in five steps from E,E-1,4-bis(4- bromophenyl)-1,3-butadiene in 34% overall yield. The butadiene was prepared in six steps from 4-bromobenzaldehyde in 35% overall yield. Copyright Taylor & Francis Group, LLC.

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Electron-Conjugated Organic Silane Compound and Production Method Thereof

The present invention provides a π-electron-conjugated organice silane compound that give an organic thin film superior in peeling restance, orientation, crystallinity and eletroconductive properties, and a production method thereof. A π-electron-conjugated organice silane compound represented by General Formula: R1-SiX1X2X3 (R1 represents an organic group having a particular monocyclic heterocyclic unit; and X1 to X3 are a group giving a hydroxyl group by hydrolysis). A method of producing the organic silane compound, comprising allowing a compound represented by General Formula: R1-Li (R1 is the same as above) or a compound represented by General Formula: R1-MgX5 (R1 is the same as above; and X5 represents a halogen atom) with a compound represented by General Formula: X4-SiX1X2X3 (X1 to X3 are the same as above; and X4 represents a hydrogen or halogen atom or a lower alkoxy group). A π-electron-conjugated organic silane compound represented by General Formula; Z-(R11)m-SiR12R13R14 (Z represents a organice group derived froma particular fused polycyclic heterocyclic compound; R11 represents a bivalent organic group; m is 0 to 10; and R12 to R14 represents a halogen atom or an alkoxy group). A method of producing the organic silane compound, comprising allowing a compound represented by General Formula: Z-(R11)m-MgX30 (Z, R11 and m are the same as above; and X30 represents a halogen atom) to react with a compound represented by General Formula: X31-SiR12R13R14 (X31 represents a hydrogen or halogen atom or an alkoxy group; and R12 to R14 are the same as above).

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