52498-14-3

Upstream product

• 637-69-4 4-Methoxystyrene 
• 52498-18-7 1,2-bis(4-methoxyphenyl)cyclobut-1-ene 
• 15982-64-6 1,4-bis(4-methoxyphenyl)butane-1,4-dione 
• 52498-16-5 1,4-bis-(4-methoxy-phenyl)-butane-1,4-diol 
• 52498-17-6 1,4-Bis-(p-anisyl)-1,4-dichlor-butan 
• 2632-13-5 2-Bromo-4'-methoxyacetophenone 
• 2881-83-6 ethyl 4-methoxybenzoylacetate 

Downstream Products

• 52498-15-4 trans-1,2-bis(4-methoxyphenyl)cyclobutane 

Relevant academic research and scientific papers

Nanosecond and picosecond dynamics of the radical cation mediated dimerization of 4-methoxystyrene

The addition of the 4-methoxystyrene radical cation to neutral 4-methoxystyrene and the cleavage reactions of the 1,2-bis(4-methoxyphenyl)cyclobutane radical cation in acetonitrile have been studied by product analysis and by nanosecond and picosecond tra

Effect of co-adsorbed water on photodimerization and photooxygenation of 4-methoxystyrene included in NaY

Irradiation of 4-methoxystyrene (1) in zeolite NaY under vacuum, dry oxygen, and wet air yielded dimers and oxygenation products dependent on the atmosphere and co-adsorbed water. Head-to-head cis- and trans-cyclobutane dimers of 1 were produced at the isomer ratio of 91/9 under vacuum through excimer of 1 and 38/62 under wet air through cation radical of 1, respectively. However, 4-methoxybenzaldehyde was a primary product under dry oxygen at the expense of production of the dimers (c/t = 81/19). These results show significant differences in the photochemical behavior of 1 in solution and in NaY.

Dye-Sensitized Oxygenation and Dimerization of 4-methoxystyrene through Electron Transfer

Photoreactions of 4-methoxystyrene (1) sensitized with dyes such as Acriflavine, Rhodamine 6G, and Methylene Blue in methanol under oxygen afforded 4-methoxybenzaldehyde, its dimethyl acetal, and 2-methoxy-2-(4-methoxyphenyl)ethanol as oxidation products together with the corresponding dimers, cis- and trans-cyclobutanes in a ratio of cis/trans ca. 5/95.On the basis of quenching studies of fluorescence and T-T absorption of the dyes, the oxygenation and dimerization are proposed to proceed through an electron transfer from 1 to excited singlet dyes but not to involve generation of singlet oxygen.

MECHANISTIC CONSIDERATIONS ON PHOTOREACTION OF ORGANIC COMPOUNDS VIA EXCITATION OF CONTACT CHARGE TRANSFER COMPLEXES WITH OXYGEN

Reactions of various organic compounds induced by excitation of their contact charge transfer (CCT) pairs with oxygen were classified into three types of behaviour on the basis of reaction products.It is proposed that the excited state of the CCT pairs gives the products through the most isoenergetic course along the plausible exothermic pathway.

THE ROLE OF OXYGEN AS AN ELECTRON ACCEPTOR IN DIMERIZATION OF SOME STYRENE DERIVATIVES

Irradiation of the CT bands of p-methoxy- and p-methylstyrene with oxygen induced the dimerization of the olefins through their cation radicals generated by electron transfer on CT excitation.