Alkene 1,3‐Difluorination via Transient Oxonium Intermediates
作者:Alice C. Dean、E. Harvey Randle、Andrew J. D. Lacey、Guilherme A. Marczak Giorio、Sayad Doobary、Benjamin D. Cons、Alastair J. J. Lennox
DOI:10.1002/anie.202404666
日期:2024.7.22
diastereoselective hypervalentiodine-mediated 1,3-difluorination of homoallylic (aryl) ethers. The transformation proceeds through a transiently formed oxonium intermediate that is opened by fluoride to rearrange an alkyl chain. The protocol is scalable and tolerates a variety of functional groups and substitution on the alkenyl chain. Mechanistic studies reveal key insights into the reaction selectivity.