3988-03-2

Usage

Uses

Used in Polymer Synthesis:
4,4'-Dibromobenzophenone is utilized as a monomer in the synthesis of high molecular weight poly(p-phenylene) derivatives. This application takes advantage of its reactive bromine atoms, which participate in palladium-catalyzed polycondensation reactions to form the desired polymers. These polymers are known for their potential applications in various industries due to their unique properties, such as electrical conductivity and thermal stability.

Upstream product

• 56-23-5 tetrachloromethane 
• 108-86-1 bromobenzene 
• 29334-18-7 bis-(4-bromophenyl)methanol 
• 1941-86-2 bis(4-bromophenyl)methane 
• 50794-50-8 1,1-dibromo-2,2-bis-(4-bromo-phenyl)-ethene 
• 30738-49-9 2,2-bis(4-bromophenyl)-2-hydroxyacetic acid 
• 871881-58-2 tetrakis-(4-bromo-phenyl)-ethane-1,2-diol 
• 15719-64-9 methylammonium carbonate 
• 75-36-5 acetyl chloride 
• 39179-74-3 C₃₁H₂₈Br₂O₂ 
• 201230-82-2 carbon monoxide 
• 589-87-7 1,4-bromoiodobenzene 
• 10605-43-3 1,1-bis(p-bromophenyl)ethylene 
• 65826-67-7 bis(4-bromophenyl)iodonium bromide 

Downstream Products

• 101875-61-0 bis-(4-bromo-phenyl)-[2]pyridyl-methanol 
• 858445-49-5 1,1-bis(4-bromophenyl)-3-phenylprop-2-yn-1-ol 
• 854750-20-2 4,4'-dibromo-4''-chloro-trityl chloride 
• 103165-98-6 1,1-bis-(4-bromo-phenyl)-5,5-diphenyl-pent-2-yne-1,5-diol 
• 586-76-5 4-Bromobenzoic acid 
• 14984-21-5 4,4'-bis(phenoxy)benzophenone 
• 86988-52-5 1,1-bis(4-bromophenyl)ethanol 
• 26957-40-4 1,1-bis(4-bromophenyl)-2-methylpropene 
• 115096-74-7 4-[2,2-bis-(4-bromo-phenyl)-vinyl]-anisole 
• 111561-90-1 4,4',4''-(ethene-1,1,2-triyl)tris(bromobenzene) 
• 198066-39-6 bis-(4-bromo-phenyl)-phenyl-methanol 
• 854750-19-9 4,4'-dibromo-trityl chloride 
• 29334-18-7 bis-(4-bromophenyl)methanol 
• 54008-12-7 4,4'-dibromo-benzophenone-hydrazone 

Relevant academic research and scientific papers

Visible light-mediated, high-efficiency oxidation of benzyl to acetophenone catalyzed by fluorescein

An environmentally friendly aerobic oxidation of benzyl C(sp3)-H bonds to ketones via selective oxidation catalysis was developed. Fluorescein is an efficient photocatalyst with excellent chemical selectivity. The reaction has a wide substrate scope, and a successful gram-scale experiment demonstrated its potential industrial utility.

Halogen Bonding Tetraphenylethene Anion Receptors: Anion-Induced Emissive Aggregates and Photoswitchable Recognition

A series of tetraphenylethene (TPE) derivatives functionalized with highly potent electron-deficient perfluoroaryl iodo-triazole halogen bond (XB) donors for anion recognition are reported. 1H NMR titration experiments, fluorescence spectroscopy, dynamic light scattering measurements, TEM imaging and X-ray crystal structure analysis reveal that the tetra-substituted halogen bonding receptor forms luminescent nanoscale aggregates, the formation of which is driven by XB-mediated anion coordination. This anion-coordination-induced aggregation effect serves as a powerful sensory mechanism, capable of luminescence chloride sensing at parts per billion concentration. Furthermore, the doubly substituted geometric isomers act as unprecedented photoswitchable XB donor anion receptors, where the composition of the photostationary state can be modulated by the presence of a coordinating halide anion.

Method for preparing symmetric diarylketone through catalytic oxidative carbonylation

The invention discloses a method for preparing symmetric diarylketone of a formula (I) as shown in the description. The method comprises the following steps: mixing arylboronic acid (II) (Ar-B(OH)2 (II)), a palladium catalyst, a promoter and an organic solvent in a reactor, introducing air and CO having a volume ratio of (7-19):1, reacting under the conditions of a pressure of 1-6 atm and a temperature of 30-80 DEG C for 8-16 hours, and performing after-treatment on the reaction solution, thereby obtaining the product symmetric diarylketone. According to the method disclosed by the invention,the air directly serves as an oxidizing agent to replace the O2 to be applied to oxidative carbonylation of the arylboronic acid, and the ratio of the air to CO is beyond an explosion limit. Therefore, the catalytic system is safe and economic. The palladium catalyst is small in dosage and simple in separation and can be recycled for several times. The method disclosed by the invention is mild inreaction condition, excellent in substrate suitability and high in yield.

PROCESS FOR THE PREPARATION OF DIHALOBENZOPHENONES, NEW CHEMICALS USEFUL FOR ITS IMPLEMENTATION AND METHODS FOR PREPARING SAID CHEMICALS

The invention relates to new compounds of formulae (IV) and (VII): (IV) (VII) wherein X represents a halogen atom selected from the group consisting of fluorine, chlorine, bromine and iodine and R is a hydrocarbyl radical, said compounds being useful as precursors and/or intermediates for the preparation of 4,4'dihalobenzophenones of formula (I): (I) wherein X is as defined above.

NEW CYCLOADDUCT PRECURSORS OF DIHALOBENZOPHENONES AND PREPARATIONS THEREOF

The invention relates to new compounds of formula (I): wherein X represents a halogen atom selected from the group consisting of fluorine, chlorine, bromine and iodine, which are useful for the preparation of 4,4'dihalobenzophenones of formula (III): wherein X is as defined above.

SPIROCYCLIC DERIVATIVE, AND POLYMER, MIXTURE, FORMULATION AND ORGANIC ELECTRONIC DEVICE COMPRISING THE SAME

Provided are a spirocyclic derivative, and a high polymer, a mixture, a composition and an organic electronic device containing same, wherein in the spirocyclic derivative, two spirocyclic units are directly or indirectly connected by a sp3 hybridized carbon atom, thus effectively adjusting the energy level of the compound, and being beneficial for improving the photoelectric performance of the compound and the stability of the device. An effective solution is provided for effectively reducing the manufacturing cost and improving the efficiency and lifetime of a light-emitting device.

Palladium-Catalyzed Carbonylative Homocoupling of Aryl Iodides for the Synthesis of Symmetrical Diaryl Ketones with Formic Acid

A convenient method for the palladium-catalyzed carbonylative homocoupling of aryl iodides was developed. With formic acid as the CO source, various symmetrical diaryl ketones were synthesized in moderate to good yield in the presence of a palladium catalyst.

ELECTRO-OPTICAL DEVICE AND USE THEREOF

The present invention relates to an electro-optical device comprising a) an anode, b) a cathode, c) at least one emitter layer, which is arranged between the anode and the cathode, containing at least one semi-conductive, organic material, and d) at least one intermediate layer, which is arranged between the at least one emitter layer and the anode, and which contains a polymer having hole-conducting structural units. The device is characterized in that the polymer having hole-conducting structural units additionally have structural units having electron-conducting properties. The devices according to the invention have significantly longer service lives compared to known devices.

COMPOUND FOR ORGANIC ELECTRONIC ELEMENT, ORGANIC ELECTRONIC ELEMENT USING THE SAME, AND AN ELECTRONIC DEVICE THEREOF

Provided is a compound which is represented by chemical formula 1, wherein the compound exhibits high luminous efficiency and low driving voltage and increases lifespan of a device. Also, provided are an organic electric element using the same and an electronic device thereof.

Co(III)-Catalyzed Synthesis of Quinazolines via C-H Activation of N-Sulfinylimines and Benzimidates

C-H activation of arenes has been established as an important strategy for heterocycle synthesis via annulations between arenes and unsaturated coupling partners. However, nitriles failed to act as such a coupling partner. Dioxazolones have been employed as a synthon of nitriles, and subsequent coupling with arenes such as N-sulfinylimines and benzimidates bearing a functionalizable directing group provided facile access to two classes of quinazolines under Co(III)-catalysis.