Highly Functionalized and Potent Antiviral Cyclopentane Derivatives Formed by a Tandem Process Consisting of Organometallic, Transition-Metal-Catalyzed, and Radical Reaction Steps
A simple modular tandem approach to multiply substituted cyclopentanederivatives is reported, which succeeds by joining organometallic addition, conjugateaddition, radical cyclization, and oxygenation steps. The key steps enabling this tandem process are the thus far rarely used isomerization of allylic alkoxides to enolates and single‐electron transfer to merge the organometallic step with the radical
The oxidation of diethyl ω-phenylalkenylmalonates by Mn(III) acetate in acetic acid and Fe(III) perchlorate nonahydrate in acetonitrile or acetonitrile/acetic anhydride is investigated. Diethyl cinnamylmalonates 1, 2 and 3 afford intramolecular addition products to the double bond (cyclopropanes 10) and to the aromatic ring (tetrahydronaphthalenes 8 or 9). A mechanism based on a fast and reversible
Lithium Malonate Enolates as Precursors for Radical Reactions − Convenient Induction of Radical Cyclizations with either Radical or Cationic Termination
作者:Ullrich Jahn、Philip Hartmann、Ina Dix、Peter G. Jones