| 摘要 |
<p>A process for the fluorination of a partially fluorinated ether having the formula R-O-CH2-R1 wherein R is a fluoroalkyl group having from 1 to 6 carbon atoms and R1 is hydrogen, fluorine or a fluoroalkyl group having from 1 to 6 carbon atoms, provided that where R1 is a fluoroalkyl group, R is not a trifluoromethyl group or a fluoroalkyl group having a difluoromethylene group at the α-position relative to the oxygen atom, which comprises contacting the partially fluorinated ether with a transition metal fluorinating agent, especially cobalt trifluoride. 1-difluoromethoxy-1,2,2,2-tetrafluoroethane may be produced where the fluorinated ether has the formula CF¿3?-CHR-O-CH2R where each R is independently fluorine or hydrogen.</p> |
