Rearrangement of 3-Membered 1,1,2-Trifluorobromonium and Iodonium Ions and Comparison of Trifluorochloronium to Fluorocarbenium Ions
作者:Dale F. Shellhamer、Kevyn J. Davenport、Heidi K. Forberg、Matthew P. Herrick、Rachel N. Jones、Sean J. Rodriguez、Sunamita Sanabria、Nicole N. Trager、Ryan J. Weiss、Victor L. Heasley、Jerry A. Boatz
DOI:10.1021/jo800472e
日期:2008.6.1
halonium ionintermediates are 11 to 27 kcal/mol more stable than the three-membered-ring halonium ions or the open-ions A and E. The five-membered-ring intermediates lead to rearranged products. Rearranged products increase as the number-4 halogen (Z) becomes more nucleophilic (Z: Cl < Br < I). Open chloronium ions from ionic chlorination of terminal fluorovinyl alkenes are compared to the open ions generated