A two-step process for the synthesis of trifluoromethyl-substituted cyclopropanes is described. Halothane, an anesthetic agent, is added to olefins in a ruthenium-catalyzed Kharasch reaction. The resulting 1,3-dihalides are converted into cyclopropanes by dehalogenation with magnesium. This procedure represents an alternative to metal-catalyzed cyclopropanations involving trifluoromethyl diazomethane.
Kristin Schirmer, Julita Maria Stadnicka-Michalak
Jean-Philippe Thiran, Matteo Sorci, Anil Yuce, Gabriel Louis Cuendet