| abstract |
NEW MATERIAL:The compound of formula I (R is fluorine-containing organic group). n EXAMPLE: 3-(3'-Nitro-1'-triazol)-2,2-difluoropropionic acid methyl ester. n USE: A radiosensitizer. n PREPARATION: The compound of formula I can be produced by the addition reaction of a fluorine-containing epoxy compound to the compound of formula II. The reaction is carried out at 0-100°C, preferably 50-70°C without using a solvent or in an alcohol, dioxane, etc. n COPYRIGHT: (C)1990,JPO&Japio |