(Z) -Trifluoromethyl-Trisubstituted Alkenes or Isoxazolines: Divergent Pathways from the Same Allene
Because of a charge-dipole interaction involving nonbonding electron pairs on fluorine, protonation of trifluoromethyl allenes leads to tri- or tetrasubstituted alkenes with high (Z)-selectivity. Treatment of the same allenes with catalytic Au(I) initiates a reaction cascade that produces isoxazolines in high yield.
Liu, Chaolun,Rowland, Casey A.,Tius, Marcus A.,Yap, Glenn P. A.
supporting information
p. 7208 - 7212
(2020/10/02)
2,2-Dihydroperfluoropentane (HFC 4310 mf) synthesis from HFP dimer
The thermodynamic dimer of hexafluoropropene (HFP) may be used for the one pot synthesis of 2H-perfluoro-2-pentene, which is the starting compound for preparation of 2,2-dihydroperfluoropentane (HFC 4310 mf).