| 摘要 |
1,230,932. Process for the preparation of tetrafluoroethyl phenyl ethers. FARBWERKE HOECHST A.G. 9 April, 1969 [9 April, 1968], No. 18168/69. Heading C2C.α,α,#,#-Tetrafluoroethyl phenyl ethers are prepared by reacting a phenol and an alkali metal hydroxide or an alkali metal phenolate with tetrafluoroethylene in a water-miscible solvent at a temperature of 40-150‹ C. and at a pressure within the range of from 2 to 40 atmospheres gauge in the presence of water, the molar ratio of the tetrafluoroethylene used to the phenol or phenolate being not greater than one. It is preferable to use a substituted phenol which may be an o, m- or p-nitrophenol, aminophenol, dimethylaminophenol, anisol, phenetol or butoxy-phenol. Using this process o-, m- and p-nitrophenyl -α,α,#,# - tetrafluoroethyl ether; 2 - methyl - 4 - nitrophenol -α,α,#,# - tetrafluoroethyl ether, 3-aminophenyltetrafluoroethyl ether, phenyl-α,α,#,#-tetrafluoroethyl ether &c. are prepared in the examples.
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