27331-24-4

Upstream product

• 105654-27-1 (Z,Z)-bis(2-phenylethenyl)telluride 
• 121758-59-6 (Z,Z)-bis(p-metylstyryl) telluride 
• 201852-49-5 potassium (E)-trifluoro(styryl)borate 
• 100-44-7 benzyl chloride 
• 1504-75-2 3-(4-methylphenyl)acrylaldehyde 
• 1515-78-2 buta-1,3-dien-1-ylbenzene 
• 2028-84-4 p-methylbenzenediazonium chloride 

Downstream Products

• 23798-77-8 trans-1-Phenyl-4-(4-phenyl-stilben-4-yl)-butadien 
• 23798-79-0 trans-1-Phenyl-4-(4-(2-naphthyl-⁽¹⁾-ethenyl)-phenyl)-butadien 
• 23798-78-9 trans-1-Phenyl-4-(4-(2-naphthyl-⁽²⁾-ethenyl)-phenyl)-butadien 
• 19723-03-6 7-methyl-1-phenylnaphthalene 
• 27331-34-6 1-(4-methylphenyl)naphthalene 
• 29304-62-9 6-methyl-4-phenyl-1,2-dihydro-naphthalene 
• 6936-14-7 1,2-dihydro-4-(4-methylphenyl)naphthalene 
• 5732-05-8 1t-phenyl-4t(trans-stilben-4-yl)-buta-1,3-diene 

Relevant academic research and scientific papers

Effect of substituents and conjugated chain length on the UV spectra of α,ω-di-substituted phenyl polyenes

A series of α,ω-di-substituted phenyl polyenes, p-X-Ph(CH = CH)nPh-p-Y (n = 1, 2, or 3) were synthesized, and their ultraviolet (UV) absorption maximum wavelength were determined. The correlation between molecular structure and the maximum wavelength energy (wavenumber/cm -1) was carried out. The results show that the maximum wavelength energy of the title compounds is mainly affected by both substituent excited-state parameters and maximum wavelength energy of the parent molecule. However, the two influence factors are not independent, and the action of substituent is governed by the parent molecular absorption energy. In the case of the compounds containing NO2 or NH2 groups, the influence of interaction of polarity parameters on the maximum wavelength energy must also be considered. In addition, the exploration was also made for the quantifying correlation of UV absorption maximum wavelength energy with the conjugated polarizability potential CPP replacing the parent molecular absorption energy. And the results indicate that the equation with CPP parameters is more accurate and convenient. Copyright 2013 John Wiley & Sons, Ltd. For the α,ω-di-substituted phenyl polyenes, p-X-Ph(CH = CH)nPh-p-Y (n = 1, 2, or 3), their ultraviolet absorption maximum wavelength energy (wavenumber/cm-1) was mainly affected by both substituent excited-state parameters and maximum wavelength energy of the parent molecule. However, the two influence factors are not independent, and the action of substituent is governed by the parent molecular absorption energy. Copyright

Palladium-catalyzed oxidative homocoupling of potassium alkenyltrifluoroborates: synthesis of symmetrical 1,3-dienes

Herein, we describe a convenient method for the synthesis of symmetrical 1,3-dienes employing an oxidative palladium-catalyzed homocoupling of potassium alkenyltrifluoroborates providing products in good yields relative to existing methodologies. This is the first report of a cross-dimerization of potassium alkenyltrifluoroborates.

Palladium-catalyzed homocoupling reactions of organic tellurides

Organic tellurides containing a styryl moiety react in acetonitrile to give the corresponding homocoupling products, 1,3-dienes, with moderate to quantitative yields in the presence of a catalytic amount of Pd(OAc)2 together with AgOAc at 25 °C. In contrast, such homocoupling reactions hardly occur with diaryl, alkyl aryl, dialkyl, and alkynyl aryl tellurides, even at reflux temperature and in the presence of a stoichiometric amount of palladium salt, in disagreement with reported results. The result of cross-over experiments suggests that this homocoupling reaction occurs between an alkenyl telluride and an alkenylpalladium species, the latter being formed via the migration of an alkenyl moiety from Te to Pd (transmetallation).