Chloro pentafluoroethyl

Silver(I) fluoride is most useful for the conversion of 2-chloro-4,6-bis(pentafluoroethyl)-1,3,5-triazine, 2-chloro-4,6-bis(heptafluoropropyl)-l,3,5-triazine, and 2,4,6-trichloro-l,3,5-triazine to the corresponding fluoro-l,3,5-triazines. 2-Fluoro-4,6-bis(pentafluoroethyl)-l,3,5-triazineis obtained in 98 % yield, and 2-fluoro-4,6-bis(heptafluoropropyl)-l,3,5-triazinein 95 % yield, (both at 90 C for 30 minutes), while 2,4,6-trifluoro-l,3,5-triazine is available in 78.5% yield (at 100CC for 1 hour). Silver(II) fluoride, mercury(II) fluoride and antimony dichloride trifluoride give lower yields of these compounds.34... 

BENZIMIDAZOLE, 2-PENTAFLUOROETHYL-[Pg.224]

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