Bulletin of the Chemical Society of Japan p. 2751 - 2756 (1991)
Update date:2022-08-03
Topics:
Okuyama, Tadashi
Haga, Naoki
Takane, Shin-ya
Ueno, Kenji
Fueno, Takayuki
2-Phenyl-1,3-dithiolanylium ion is generated as a transient intermediate by flash photolysis of aqueous ethanol and acetonitrile solutions of 2-methoxy and other dithiolane derivatives with a xenon lamp.Decay of the absorption (342 nm) of the cation generated from the 2-methoxy derivative follows pseudo-first-order kinetics.Rate constants were measured for the reaction of the cation with various nucleophiles.Decay curves for the cations generated from 2-arylthio and 2-sulfonyl derivatives are steep and show second-order kinetic character owing to the recombination of the cation with the counter anions (thiolate and sulfinate).
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