301684-13-9

Upstream product

• 13041-70-8 (E)-4-bromostilbene 
• 1122-91-4 4-bromo-benzaldehyde 
• 589-15-1 1-bromomethyl-4-bromobenzene 
• 51044-13-4 4-bromobenzyl triphenylphosphonium bromide 
• 63697-96-1 4-Ethynylbenzaldehyde 
• 77123-57-0 4-[(trimethylsilyl)ethynyl]bezaldehyde 
• 100-42-5 styrene 
• 1080-32-6 O,O-diethyl benzylphosphonate 
• 386213-46-3 2-((E)-4-stilbenyl)-1,1-dibromoethene 
• 32555-96-7 4-styrylbenzaldehyde 

Downstream Products

• 301684-08-2 1-[2-(4-styrylphenyl)ethenyl]-1-boracyclohexa-2,5-diene 
• 633302-40-6 [Au((E)-4-HCCC₆H₄CH=CHPh)(PMe₃)] 
• 633302-39-3 [Au((E)-4-HCCC₆H₄CH=CHPh)(PPh₃)] 
• 6928-98-9 (E)-1-(1-(tert-butylperoxy)-3,3,3-trifluoropropyl)-4-styrylbenzene 

Relevant academic research and scientific papers

Electronic and steric effects of platinum(ii) di-yne and poly-yne substituents on the photo-switching behaviour of stilbene: Experimental and theoretical insights

A series of mono-, di-, and poly(platina-ynes) incorporating stilbene spacer units with the formulae trans-[R-CC-Pt(PBu3)2-CC-R] (R = (E)-1,2-diphenylethene), trans-[(Ph)-(Et3P)2PtCC-R-CCPt(PEt3)2(Ph)] (R = (E)-1,2-diphenylethene), and trans-[-(PnBu3)2PtC

Ruthenium stilbenyl and diruthenium distyrylethene complexes: Aspects of electron delocalization and electrocatalyzed isomerization of the Z-isomer

Regio- and stereoselective insertion of the terminal ethynyl functions of 4-ethynylstilbene, the E and Z isomers of 4,4′-bis(ethynylphenyl)ethene and a backbone-rigidified cyclohexenyl derivative of the Z isomer into the Ru-H bond of the complex RuClH(CO)(PiPr3)2 provides the corresponding vinyl ruthenium complexes, which have been characterized spectroscopically and by X-ray crystallography. Large red shifts of the UV/vis absorption bands evidence efficient incorporation of the vinyl metal subunit(s) into the conjugated π-system. All complexes oxidize at low potentials. The various oxidized forms of all complexes were generated and characterized by UV/vis/NIR, IR and EPR spectroscopies. These studies indicated electrocatalytic Z→E isomerization of the oxidized Z-distyrylethene complex Ru-Z2, which is prevented in its backbone-rigidified derivative Ru-Z2fix. The radical cations of the E and the configurationally stable cyclohexene-bridged Z-derivatives are spin-delocalized on the EPR time scale but charge-localized on the faster IR time scale. The degree of ground-state charge delocalization in the mixed-valent state has been quantified by the incremental shifts of the Ru-CO bands upon stepwise oxidation to the radical cations and the dications and was found to be remarkably large (19% and 9%) considering redox splittings ΔE 1/2 of just 49 or 74 mV. Quantum chemical studies with various levels of sophistication reproduce our experimental results including the electronic spectra of the neutral complexes and the intrinsically localized nature of the radical cations of the dinuclear complexes.

Synthesis of 1-aryl-1,3-diyne and 2-aryl-1,1-dialkynylethene from the Sonogashira reactions of 2-aryl-1,1-dibromoethene

Both 1-aryl-1,3-diyne and 2-aryl-1,1-dialkynylethene were produced from the Sonogashira reactions of 2-aryl-1,1-dibromoethene with 1-alkyne. The ratio of the products varied according to the reaction conditions. The coupling reactions in benzene afforded