ИСТИНА

The invention relates to a 1-fluoroimine compds. of formula I and their prepn. method. Compds. of formula I wherein R is alkyl or aryl; and their prepn. method thereof, are claimed. Compds. of formula I were prepd. via salt formation of Et2O·BF3 with Et ether in the presence of chloromethyl epoxyethane; the resulting Et3O+·BF4- underwent N-ethylation with alkyl cyanides to give R-C≡N+ BF4-, which underwent heat deccomposition to give I. Since The inventive 1-fluoroimine compds. have α carbon atom connected with a fluorine atom with strong electron adsorption, they have more stable chem. property, in some document reports, fluorine atom of fluoro imine compd. mostly is located on beta, gamma carbon atom or a substitute, fluoro imine compd. with fluorinated α carbon atom is not found, thereby the inventive 1-fluoroimine compd. has more stable chem. properties than other imine compd. and other fluoro imine compd.