Process for the preparation of aryl-1,1,2,2-tetrafluoroethyl ethers

Claim 1

IN A PROCESS FOR THE PREPARATION OF AN ARYL-1,2,2-TETRAFLUOROETHYL ETHER BY REACTING A PHENOL WITH TETRAFLUORETHYLENE IN AN ORGANIC SOLVENT IN THE PRESENCE OF AN ALKALINE CATALYST AT ELEVATED TEMPERATURES, THE IMMPROVEMENT COMPRISING REACTING A PHENOLIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF PHENOL, NAPHTHOL AND PHENOL SUBSTITUTED BY 1 TO 3 SUBSTITUTENTS SELECTED FROM THE GROUP CONSISTING OF ALKYL OF 1 TO 20 CARBON ATOMS, ALKOXY OF 1 TO 6 CARBON ATOMS, HYDROXY, FORMYL, AMINO, MONOALKYLAMINO OF 1 TO 4 CARBON ATOMS, DIALKYLAMINO OF 1 TO 4 CARBON ATOMS IN ACH ALKYL MOIETY, PIPERIDINO, MORPHOLINO AND ALKANOYLAMINO OF 1 TO 5 CARBON ATOMS IN THE ALKANE MOIETY, WITH TETRAFLUOROETHYLENE IN A WATER-MISCIBLE POLAR INERT SOLVENT WITH ABOUT 0.05 TO ABOUT 0.5 MOL OF POTASSIUM HYDROXIDE PER EACH EQUIVALENT OF PHENOLIC HYDROXY GROUP AT A TEMPERATURE OF ABOUT 50* TO ABOUT 150*C AND A PRESSURE VARYING BETWEEN ATMOSHERIC PRESSURE AND SLIGHTLY SUBATMOSPHERIC PRESSURE.