氟烷基化和氟烷氧基化的研究——31.cd型阴离子存在下烯烃的氟烷基化反应

Studies on Fluoroalkylation and Fluoroalkoxylation——31. The Reaction of Perfluoroalkyl Iodides with Olefins Induced by Capto-dative Anions

氟烷基碘在cd型阴离子存在下能与烯烃加成,得含氟烯烃。反应能被光加速和被对二硝基苯部分阻止,是一个单电子转移过程。

Fluoroalkyl captodative compounds (lb—1e) are synthesized. Their anions can induce the reaction of perfluoroalkyl iodides with olefins to give the fluoroalkenes 5 main]y. This reaction is accelerated by UV irradiation and partly suppreseed, by pdinitrobenzene(p-DNB). Diallyl ether (DAE) can trap the radical intermediate to afford tetrahydrofuran derivatives. A single electron transfer (SET) mechanism is proposed.