16141-46-1

Upstream product

• 563-79-1 2,3-Dimethyl-2-butene 
• 103-30-0 (E)-1,2-diphenyl-ethene 

Downstream Products

• 563-79-1 2,3-Dimethyl-2-butene 
• 103-30-0 (E)-1,2-diphenyl-ethene 
• 768-49-0 (2-methyl-1-propenyl)-benzene 
• 20396-45-6 3.3.4.4-Tetramethyl-1.2-bis-<4-bromphenyl>-cyclobuten 
• 20396-46-7 1,2-diphenyl-3,3,4,4-tetramethylcyclobutene 

Relevant academic research and scientific papers

Remarkable Suppression of [2+2] Cycloaddition during Nonresonant Two-photon Photoreaction of trans-Stilbene in the Presence of Tetramethylethylene

Nonresonant two-photon excitation of trans-stilbene in the presence of an excess amount of tetramethylethylene induced predominantly cis-trans isomerization; the [2+2] intermolecular cycloaddition pathway was remarkably suppressed, in contrast to the one-photon excitation under similar conditions, where the cycloaddition is known to be the major pathway.

Picosecond dynamics for the photocycloaddition of trans-stilbene with tetramethylethylene: No evidence of an exciplex

Picosecond absorption spectroscopy is used to examine the temperature dependence of the dynamics for the quenching of the first excited singlet state of trans-stilbene (TS*) by tetramethylethylene (TME) in hexane. The rate of quenching TS* by TME is 3.6 × 109 M-18-1d it is virtually independent of temperature over the temperature range of -8.0 to 36. °C. There is no kinetic evidence for reversible exciplex formation.