A new route to triphenylsilane tritium-labeled in the benzene ring was developed: condensation of diphenylsilane with tritium-multilabeled benzene. Triphenylsilane labeled with tritium at the Si-H position was prepared. The labeled silanes can serve as precursors of the triphenylsilylium ion and the corresponding isomeric carbon-centered species; the relative stability of these ions can be judged from the structure of products formed by reactions of these species under identical conditions.
Ion-molecular reactions of free phenylium ions, generated by tritium β-decay with bidentate arenes
作者:N.E Shchepina、V.D Nefedov、M.A Toropova、V.V Avrorin、Scott B Lewis、Bruce Mattson
DOI:10.1016/s0040-4039(99)02019-5
日期:2000.1
phenylium ions, obtained by tritium β-decay and their ion-molecular reactions with bidentate arenes are described. The elaborated nuclear-chemical method has been used for the synthesis of tritiumlabeled organic derivatives using halobenzenes. Two alternative pathways for interaction of the phenylium ion with the bidentate arene, addition to the lone pair of the halogen or substitution on the aromatic