2039-68-1

Basic information

• Product Name: TRANS-4,4'-DIPHENYLSTILBENE
• Synonyms: 4,4'-DIPHENYLSTILBENE;1,2-BIS(P-BIPHENYLYL)ETHYLENE;TRANS-4,4'-DIPHENYLSTILBENE;TRANS-P,P'-DIPHENYLSTILBENE;44'-Diphenylstilbene,ScintillationGrade;1,2-bis(p-Biphenylyl)ethylene, DPS;4,4''-(1,2-Ethenediyl)bis(1,1'-biphenyl);4,4''-(Ethene-1,2-diyl)bis(biphenyl)
• CAS NO: 2039-68-1
• Molecular Formula: C₂₆H₂₀
• Molecular Weight: 332.44
• EINECS: 218-018-4
• Mol File: 2039-68-1.mol
• Article Data: 11

Chemical Properties

• Melting Point: 308-310°C (dec.)
• Boiling Point: 517.3°Cat760mmHg
• Flash Point: 264.2°C
• Appearance: /
• Density: 1.096g/cm³
• Storage Temp.: −20°C
• BRN: 2053491
• CAS DataBase Reference: TRANS-4,4'-DIPHENYLSTILBENE(CAS DataBase Reference)
• NIST Chemistry Reference: TRANS-4,4'-DIPHENYLSTILBENE(2039-68-1)
• EPA Substance Registry System: TRANS-4,4'-DIPHENYLSTILBENE(2039-68-1)

Safety Data

• Safety Statements: 22-24/25
• WGK Germany: 3
• Hazardous Substances Data: 2039-68-1(Hazardous Substances Data)

Usage

General Description

Trans-4,4’-diphenylstilbene, also known as DPDS, is a chemical compound belonging to the stilbene family. It is a colorless, crystalline solid that is insoluble in water but soluble in organic solvents. DPDS is mainly used as a fluorescent whitening agent in the textile industry to enhance the brightness and whiteness of fabrics. It is also utilized in the production of plastic products, adhesives, and coatings. Due to its ability to absorb ultraviolet light and emit visible light, DPDS is employed in the manufacturing of optical brightening agents and fluorescent dyes. Additionally, it has potential applications in the field of medicinal chemistry and pharmaceuticals as a lead compound for developing new drugs. However, DPDS may pose health and environmental hazards and should be handled with care.

Upstream product

• 110-82-7 cyclohexane 
• 84648-91-9 biphenyl-4-yldiazomethane 
• 5623-25-6 4,4'-diphenylbenzoin 
• 18869-30-2 (E)-4,4'-dibromostilbene 
• 98-80-6 phenylboronic acid 
• 108-86-1 bromobenzene 
• 2156-04-9 4-Vinylphenylboronic acid 
• 2039-82-9 1-bromo-4-ethenyl-benzene 
• 2350-89-2 p-vinylbiphenyl 
• 3218-36-8 4-Phenylbenzaldehyde 
• 1657-73-4 trans-4,4'-diphenylstilbene 
• 3597-91-9 biphenyl-4-yl methanol 
• 2567-29-5 p-phenylbenzyl bromide 
• 30818-70-3 diethyl (4-biphenylmethyl)phosphonate 

Downstream Products

• 1657-71-2 cis-4,4'-diphenylstilbene 
• 74431-47-3 C₂₆H₂₀^(2-)*2Na⁽¹⁺⁾ 
• 1657-73-4 trans-4,4'-diphenylstilbene 
• 1379689-24-3 (2S,3R)-2,3-di([1,1'-biphenyl]-4-yl)oxirane 
• 3218-36-8 4-Phenylbenzaldehyde 
• 1309657-13-3 4-phenyl-N-(4-methylbenzenesulfonyl)benzenecarboxamide 
• 50670-56-9 1,2-bis(p-bromobiphenylyl)ethylene 
• 114879-30-0 1,2-bis(p-bromobiphenylyl)-1,2-dibromoethane 

Relevant articles and documents

Direct Conversion of Alcohols into Alkenes by Dehydrogenative Coupling with Hydrazine/Hydrazone Catalyzed by Manganese

We have developed unprecedented methods for the direct transformation of primary alcohols to alkenes in the presence of hydrazine, and for the synthesis of mixed alkenes by the reaction of alcohols with hydrazones. The reactions are catalyzed by a manganese pincer complex and proceed in absence of added base or hydrogen acceptors, liberating dihydrogen, dinitrogen, and water as the only byproducts. The proposed mechanism, based on preparation of proposed intermediates and control experiments, suggests that the transformation occurs through metal–ligand cooperative N?H activation of a hydrazone intermediate.

Redesign of a Pyrylium Photoredox Catalyst and Its Application to the Generation of Carbonyl Ylides

We report the exploration into photoredox generation of carbonyl ylides from benzylic epoxides using newly designed 4-mesityl-2,6-diphenylpyrylium tetrafluoroborate (MDPT) and 4-mesityl-2,6-di-p-tolylpyrylium tetrafluoroborate (MD(p-tolyl)PT) catalysts. These catalysts are excited at visible wavelengths, are highly robust, and exhibit some of the highest oxidation potentials reported. Their utility was demonstrated in the mild and efficient generation of carbonyl ylides from benzylic epoxides that otherwise could not be carried out by current common photoredox catalysts.

Reductive coupling of aldehydes by H2S in aqueous solutions, a C-C bond forming reaction of prebiotic interest

We report here a novel reductive coupling reaction of conjugated, non- or poorly enolizable aldehydes induced by H2S and operative in aqueous solutions under prebiotically relevant conditions. This reaction leads from retinal to β-carotene, and from benzylic aldehydes to the corresponding diarylethylenes. This novel reaction also opens a new potentially prebiotic pathway leading from glyoxylic acid to various compounds that are involved in the reductive tricarboxylic acid cycle. This C-C bond forming reaction of prebiotic interest might have been operative, notably, in the sulfide-rich environments of hydrothermal vents, which have been postulated as possible sites for the first steps of organic chemical evolution.