A. Ohno, Tomoo Saito, A. Kudo
Jul 1, 1971
Citations
0
Influential Citations
1
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
Kinetics of the cis-trans isomerization of 1,2-bis(phenylthio)ethylene induced by benzenethiyl radicals and the exchange of phenylthio group have been studied by using thiophenol-phenyl-14C Pseudo-first order rate constants for the isomerization and the exchange are 2.08±0.22×10−5 sec−1 and 2.03±0.26×10−5 sec−1 at 50°C, respectively. The cis/trans ratio of this olefin is 55–58/45–42 at the completion of the reaction, which differs from the value obtained from the reaction induced by iodine (48–49/51–52). The difference has been interpreted with the idea that the isomer composition in the cis-trans isomerization is determined by kinetic factors when the reaction is initiated by thiyl radicals.