54655-89-9

Upstream product

• 108-30-5 succinic acid anhydride 
• 13139-86-1 4-methoxyphenyl magnesium bromide 
• 4356-69-8 1,1-bis-(4-methoxyphenyl)ethylene 
• 2132-64-1 2,2-bis-(p-methoxyphenyl)-1-bromoethylene 
• 89780-88-1 2,2,5,5-tetra(p-methoxyphenyl)tetrahydrofuran 
• 68313-25-7 3,3,6,6-Tetrakis(4-methoxyphenyl)-1,2-dioxane 
• 60-29-7 diethyl ether 
• 7726-95-6 bromine 
• 64-19-7 acetic acid 
• 64-17-5 ethanol 
• 51445-92-2 1,1,4,4-tetrakis(4-methoxyphenyl)buta-1,2,3-triene 
• 100-66-3 methoxybenzene 
• 15982-64-6 1,4-bis(4-methoxyphenyl)butane-1,4-dione 
• 72-43-5 Methoxychlor 

Downstream Products

• 90-96-0 bis(p-methoxyphenyl)methanone 
• 144211-22-3 1,1,4,4-tetrakis-(4-methoxy-phenyl)-butane 

Relevant academic research and scientific papers

FORMATION OF A 1,2-DIOXANE BY ELECTRON-TRANSFER PHOTOOXYGENATION OF 1,1-DI(p-ANISYL)ETHYLENE

A new mode of electron-transfer photooxygenation is shown to occur with the title compound (4).With this electron-rich ethylene derivative, DCA-sensitization in acetonitrile gives rise to the quantitative formation of a cyclic peroxide (5) by cycloaddition of 2 molecules of 4 and 1 molecule of O2.A mechanism is outlined for this reaction.

Stereoselective synthesis of multisubstituted butadienes through directed Mizoroki-Heck reaction and homocoupling reaction of vinyl(2-pyridyl)silane

(Chemical Equation Presented) We have developed the homocoupling reaction of alkenyl(2-pyridyl)silanes mediated by Cul and CsF, in which the strong directing effect of the 2-pyridyl group was observed. The homocoupling reaction was successfully integrated with the Mizoroki-Heck reaction of vinyl(2-pyridyl)-silane with aryl halides, enabling a rapid and stereoselective synthesis of multisubstituted butadienes. From a relatively small compound library, it was possible to detect a number of fluorescent butadienes with a wide range of fluorescence color variations (blue to reddish-orange).

One-pot synthesis of oligomeric aryl-substituted PPV analogs with extended π-conjugation

A conceptually novel approach for a stepwise one-pot synthesis of oligomeric poly(phenylvinylene) (PPV, -[C6H4-CH=CH]-) analogs with extended n-conjugation of the type H-[CH=C(Ar)-C6H4-C(Ar)=CH]n-H (n = 2, 4), from the corresponding dienic monomers (n = 1), has been studied. The oligomerizations were performed in high yields by repeating the sequential preparation of the mercuric trifluoroacetate derivative H-[CH=C(Ar)-C6H4-C(Ar)=CH]n-HgCO 2CF3 (n=1, 2) and its coupling in the presence of PdCl2. The feasibility of this approach was demonstrated by a one-pot preparation of several tetramers, directly from the corresponding monomers. The Royal Society of Chemistry 2000.

Novel photo-fragmentation of 3,3,6,6-tetra(p-methoxyphenyl)-1,2-dioxane through a C-O bond cleaved 1,6-diradical intermediate

Photolysis and thermolysis of 3,3,6,6-tetraaryl-1,2-dioxanes were investigated. The photolysis of 3,3,6,6-tetra(p-methoxyphenyl)-1,2-dioxane afforded 1,4,4-tri(p-methoxyphenyl)-3-buten-1-one and p-methoxyphenol through a novel C-O bond cleaved 1,6-diradical intermediate, while the thermolysis mainly afforded the expected decomposition product 4,4'-dimethoxybenzophenone through an O-O bond cleaved 1,6-dioxy diradical intermediate.

Photoreactions of Halogeno-1,4-naphthoquinones with Electron-rich Alkenes

Photochemical reactions of 2,3-dichloro-1,4-naphthoquinone with 1,1-diarylethylenes or the related electron-rich alkenes have been investigated by steady-state photoreactions, flash photolysis, and kinetic analyses based on the Stern-Volmer experiment and concentration dependence of quantum yields; there is reasonable agreement between them.In acetonitrile a radical ion pair composed of a quinone radical anion and a 1,1-diarylethylene radical cation was observed, while no intermediate was observed in benzene.Dimerization products derived from radical cations were obtained only in the photoreaction of quinone with 1,1-bis(4-methoxyphenyl)ethylene.

Photoinduced Electron Transfer to a Carbenium Ion

Irradiation (λ>430 nm) of the cation obtained by protonation of 1,1-di-p-anisylethylene (1) in the presence of excess 1 in benzene-trifluoroacetic acid solution results in electron transfer from the nautral ethylene and the formation of the corresponding

Surface Photochemistry: The CdS-Mediated Reactions of 1,1-Di-p-anisyletylene

The CdS-photomediated reaction of 1,1-di-p-anisylethylene (1b) leads to the formation of two cyclized (2 + 4) and two open chain dimeric products.All for reactions were quenched by 1,2,4,5-tetramethoxybenzene.Comparision of the product distribution in the CdS-induced reaction with those obtained by using cyanoaromatic sensitizers showed that the CdS distribution fell within the range found in the homogeneous systems by varying the nature of the sensitizer and of the solvent.It can be concluded that in this system, at least, the fact of adsorption on the semiconductor surface plays a minor role in directing the nature of the products.One sample of CdS used, which was of high purity, appeared able, even when washed, to induce the acid-catalyzed "dark" dimerization of 1b.This sample yielded, on irradiation, the same four dimeric materials obtained previously, together with 1,2-dimethyltetra-p-anisylethane.

Reduction of 2,2-Diaryl-1-nitroethylenes : New Synthesis of 2,2-Diarylacetaldehydes and 1,1,4,4-Tetraarylbuta-1,3-dienes

2,2-Diarylacetaldehydes (VII) have been obtained by selective and controlled reduction of 2,2-diaryl-1-nitroethylenes (IV) in acid medium, and also by acid hydrolysis of 2,2-diarylvinyl-N-acetamides (VI).Nitroalkenes (IV) have been prepared by the reaction of 2,2-diarylethylenes (I) with nitrous acid whereas N-acetamide derivatives (VI) have been obtained by reductive acetylation of the nitro compounds (IV).A number of 1,1,4,4-tetraarylbuta-1,3-dienes (XI) have been obtained by the condensation of 2,2-diarylacetaldehydes (VII) with appropriate 2,2-diarylethylenes (I).Structures of the products have been assigned on the basis of analytical data and chemical and spectral evidences.

ELECTRICAL CONDUCTIVITY OF SOME ETHYLENES AND BUTADIENES.

The effect of electron repelling groups on the conductivity of some pure aromatic semiconductors has been investigated by an electrometer method. Ethylenes and butadienes (which are ethylenes with their mirror images) in the form of compressed tablets have been chosen for this purpose. In case of ethylenes, it has been found that the resistivity increases markedly as the electron repelling effect increases, but the activation energy (1. 4 eV) remains constant. Butadienes show a similar behavior, though the relative increase in resistivity is much smaller than that of ethylenes, and the activation energy is about half as much (0. 71 eV).