Use of fluoroform as a source of difluorocarbene in the synthesis of difluoromethoxy- and difluorothiomethoxyarenes.
Fluoroform, CHF3, a non-ozone-depleting, nontoxic, and inexpensive gas can be used as a difluorocarbene source in a process for the conversion of phenols and thiophenols to their difluoromethoxy and difluorothiomethoxy derivatives. The reactions are carried out at moderate temperatures and atmospheric pressure, using potassium hydroxide as base in a two-phase (water/dioxane or water/acetonitrile) process to provide moderate to good yields of the respective products.
Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, USA.
Charles S
CS
Thomoson
William R
WR
Dolbier
D005617:Chlorofluorocarbons, Methane / Q000737:chemistry*; D006845:Hydrocarbons, Fluorinated / Q000138:chemical synthesis* / Q000737:chemistry; D015394:Molecular Structure
D005617:Chlorofluorocarbons, Methane; D006845:Hydrocarbons, Fluorinated; C009554:fluoroform