| 摘要 |
1,2,4-Triflurobenzene and 1-chloro-3,4-difluorobenzene are prepared by reacting 2,4-difluoroaniline and 5-chloro-2-fluoroaniline, respectively, with t-butyl nitrite in the presence of borontrifluoride etherate complex, followed by the thermal decomposition of the resulting diazonium salts 2,4-difluorophenyl-1-diazoniumtetrafluoroborate and 1-fluoro-4-chlorophenyl-2-diazoniumtetrafluoroborate. |
