35578-47-3

Basic information

• Product Name: 4,4'-DIBROMOBENZIL
• Synonyms: 4,4'-DIBROMOBENZIL;bis(4-bromophenyl)ethanedione;4,4'-DIBROMOBENZIL, TECH., 90%;4,4'-Dibromobenzil,97%;4,4'-dibromodibenzoyl;1,2-Bis(4-bromophenyl)-1,2-ethanedione;1,2-Bis(4-bromophenyl)ethane-1,2-dione;1,2-Bis(4-bromophenyl)ethanedione
• CAS NO: 35578-47-3
• Molecular Formula: C₁₄H₈Br₂O₂
• Molecular Weight: 368.02
• EINECS: 252-628-1
• Product Categories: Aromatic Ketones (substituted);C13 to C14;Carbonyl Compounds;Ketones
• Mol File: 35578-47-3.mol
• Article Data: 55

Chemical Properties

• Melting Point: 224-226 °C(lit.)
• Boiling Point: 457.2°Cat760mmHg
• Flash Point: 142.4°C
• Appearance: Yellow/Crystalline Powder
• Density: 1.6983 (rough estimate)
• Refractive Index: 1.4947 (estimate)
• Storage Temp.: Inert atmosphere,Room Temperature
• Water Solubility: Sparingly soluble in water.
• CAS DataBase Reference: 4,4'-DIBROMOBENZIL(CAS DataBase Reference)
• NIST Chemistry Reference: 4,4'-DIBROMOBENZIL(35578-47-3)
• EPA Substance Registry System: 4,4'-DIBROMOBENZIL(35578-47-3)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-37/39
• WGK Germany: 3
• TSCA: Yes
• Hazardous Substances Data: 35578-47-3(Hazardous Substances Data)

Usage

Chemical Properties

yellow crystalline powder

Uses

Different sources of media describe the Uses of 35578-47-3 differently. You can refer to the following data:
1. 4,4?-Dibromobenzil was used in preparation of 5,5?-bis?-(4-bromo-phenyl)-3-methyl-imidazolidine-2,4-dione, 5,5?-?bis?-(4-bromo-phenyl)-3-butyl-imidazolidine-2,4-dione,?5,5?-bis-(4-bromo-phenyl)-3-pentyl-imidazolidine-2,4-dione and 5,5?-bis?-(4-chloro-phenyl)-3-ethyl imidazolidine-2,4-dione.?It was also used in synthesis of novel quinoxaline-based sensitizers for dye-sensitized solar cells.
2. 4,4′-Dibromobenzil was used in preparation of 5,5′-bis -(4-bromo-phenyl)-3-methyl-imidazolidine-2,4-dione, 5,5′- bis -(4-bromo-phenyl)-3-butyl-imidazolidine-2,4-dione, 5,5′-bis-(4-bromo-phenyl)-3-pentyl-imidazolidine-2,4-dione and 5,5′-bis -(4-chloro-phenyl)-3-ethyl imidazolidine-2,4-dione. It was also used in synthesis of novel quinoxaline-based sensitizers for dye-sensitized solar cells.

Upstream product

• 1122-91-4 4-bromo-benzaldehyde 
• 64-19-7 acetic acid 
• 871899-75-1 4,5-diethoxy-4,5-bis-(4-bromo-phenyl)-imidazolidin-2-one 
• 201230-82-2 carbon monoxide 
• 65826-67-7 bis(4-bromophenyl)iodonium bromide 
• 4254-18-6 1,2-bis(4-bromophenyl)-2-hydroxyethan-1-one 
• 37580-82-8 1,2-di-(4-bromophenyl)-1,2-ethanediol 
• 2789-89-1 1,2-bis(4-bromophenyl)acetylene 
• 123714-75-0 4,5-bis-(4-bromo-phenyl)-1,3-dihydro-imidazol-2-one 
• 7697-37-2 nitric acid 
• 5157-14-2 4,5-bis-(4-bromo-phenyl)-4,5-dihydroxy-imidazolidin-2-one 
• 642-36-4 4,5-diphenyl-1,3-dihydro-imidazol-2-one 
• 7726-95-6 bromine 
• 6048-21-1 4-bromobenzoyl cyanide 

Downstream Products

• 30738-49-9 2,2-bis(4-bromophenyl)-2-hydroxyacetic acid 
• 586-76-5 4-Bromobenzoic acid 
• 7150-10-9 4,4'-dibromo-1,2-diphenylethanone 
• 36741-17-0 4,5-bis(4-bromophenyl)-2-phenyl-1H-imidazole 
• 100965-13-7 4,5-bis(4'-fluorophenyl)imidazole 
• 101579-12-8 5,6-bis(4-bromophenyl)pyrazine-2,3-dicarbonitrile 
• 38268-11-0 3,4-bis-(4-bromo-phenyl)-2,5-diphenyl-cyclopentadienone 
• 4254-18-6 1,2-bis(4-bromophenyl)-2-hydroxyethan-1-one 
• 170935-97-4 2-methyl-3,4-bis(p-bromophenyl)-5-phenylcyclopentadienone 
• 25206-02-4 4,5-bis-(4-bromo-phenyl)-2-(4-nitro-phenyl)-1H-imidazole 
• 37580-82-8 1,2-di-(4-bromophenyl)-1,2-ethanediol 
• 198291-09-7 1,2-bis(4-(phenylethynyl)phenyl)ethane-1,2-dione 

Relevant articles and documents

Synthesis and properties of novel spirobifluorene-cored dendrimers

Two novel spirobifluorene-cored dendrimers containing polyphenylene dendrons with the carbazole (spiro-Cz) and cyano surface groups (spiro-CN) were synthesized and characterized. Both the dendrimers show good solubility in common organic solvents. Spiro-Cz is amorphous even when it is obtained directly from organic solvents and an extremely high glass transition temperature of 332 °C is detected. These dendrimers can be reversibly oxidized and reduced in electrochemical measurements. They are blue fluorescent with small red-shift in solid film absorption and fluorescence spectra. These advantageous merits are suggested to benefit from the combined contribution from the spirobifluorene core and the bulky polyphenylene dendrons. They were used as emitting layer to fabricate organic light-emitting diodes (OLEDs). Deep-blue electroluminescence was obtained for both dendrimers devices.

Enabling DPP derivatives to show multistate emission and developing the multifunctional materials by rational branching effect

Conventional polycyclic organic molecules exhibit aggregation-caused quenching (ACQ) effect, and some organic molecules with twisted and propeller backbones could be made into aggregation-induced/enhanced emission (AIE/AEE). However, it was interesting but challenging to enable conjugated molecules derived from fused (hetero)cycles with high photo- and thermal-stability to show multistate emission, rather than only dual emission in solution and crystalline states. In the current work, we presented a rational strategy for realizing multistate emission of 1,4-diketo-pyrrolo [3,4-c]pyrrole (DPP) derivatives by employing imidazole as the additional acceptor bridge and constructing the branched DPP-centered molecule with four peripheral donors (triphenylamine). The resulting D?A?D compound (TIDPP) emitted yellow in solution with the fluorescence efficiency of ca. 70%, and its crystalline and amorphous states as well as aqueous suspensions also exhibited impressive fluorescence efficiencies of 40–50%, filling the gap between ACQ and AIE of DPP derivatives. Moreover, aggregation could greatly red-shift emission spectra and significantly enhance the two-photon absorption cross section and excitation fluorescence in the aqueous suspension. TIDPP solid was also found to exhibit the unique mechanochromic blue-shift luminescence and the commendable OFET performance, signifying the existence of aggregation-induced molecular planarization. This work demonstrated that the rational branching effect could manipulate the aggregation emission behaviors and develop the multifunctional materials.

ORGANIC COMPOUNDS AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME

The present disclosure relates to an organic compound and an organic light emitting display device using the same wherein the organic compound is represented by Chemical Formula 1 and a display device using the organic compound. The organic compound represented by Chemical Formula 1 has excellent electron transport properties and durability and is used for an electron transport layer of an organic light emitting element, thereby lowering a driving voltage and improving the luminous efficiency and lifetime. (In the above Chemical Formula 1, at least two of X1, X2 and X3 are N, Y1 and Y2 are each independently a substituted or unsubstituted phenylene group or a single bond, at least one of Ar1 and Ar2 is selected from a substituted or unsubstituted triazine group, a functional group represented by Chemical Formula 2 and a functional group represented by Chemical Formula 3.)

One-Pot, Two-Step Metal and Acid-Free Synthesis of Trisubstituted Imidazole Derivatives via Oxidation of Internal Alkynes Using an Iodine/DMSO System

A one-pot, two-step, simple, efficient and eco-friendly oxidation of internal alkynes as a key step towards the synthesis of 2,4,5-trisubstituted imidazoles, using an inexpensive I2/DMSO system, has been reported. This metal and acid-free synthesis proceeded smoothly to furnish a variety of synthetically useful trisubstituted imidazoles in moderate to excellent yields. In an effort to demonstrate the potential future applications of this system, a double oxidation study was undertaken and the desired trisubstituted imidazoles obtained in good to moderate yields.