10.1021/ja027653v.s001
Akihiko Ouchi
Akihiko
Ouchi
Zhong Li
Zhong
Li
Masako Sakuragi
Masako
Sakuragi
Tetsuro Majima
Tetsuro
Majima
A Two-Color Laser Photolysis Method for Determining
Reaction Rates of Short-Lived Intermediates by Product
Analysis: Application to the <i>o</i>-Quinodimethane Problem
American Chemical Society
2002
maleic anhydride
Reaction Rates
product yields
Quinodimethane Problem
pulse laser photolysis technique
product analysis
excimer
delay times
nm
reaction mixture
cycloaddition reaction
2002-12-31 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/A_Two-Color_Laser_Photolysis_Method_for_Determining_Reaction_Rates_of_Short-Lived_Intermediates_by_Product_Analysis_Application_to_the_i_o_i_-Quinodimethane_Problem/3645348
A time-delayed, two-color pulse laser photolysis technique was used for a kinetic study of short-lived transient species through product analysis, the determination of the rate constant of the cycloaddition
of <i>o</i>-quinodimethane (<b>1</b>) and maleic anhydride (<b>2</b>) in room-temperature solutions. <i>o</i>-Quinodimethane (<b>1</b>)
was generated from 1,2-bis[(phenylseleno)methyl]benzene (<b>3</b>) by the irradiation of a pulse of a KrF excimer
laser (248 nm) in the presence of excess <b>2</b>, and a successive pulse of a XeCl excimer laser (308 nm) was
irradiated to the reaction mixture after varied delay times from 0 to 0.1 s for the decomposition of the
remaining <b>1</b> to quench the cycloaddition reaction. The rate constant of the cycloaddition of <b>1</b> and <b>2</b> was 2.1
× 10<sup>5</sup> M<sup>-1</sup> s<sup>-1</sup>, which was obtained by the analysis of the delay-time dependence of the product yields.