Reactions involving fluoride ion. Part 45. An approach to surface treatment using perfluoro-(isopropyl)-s-triazines

Perfluoro-(isopropyl)-s-triazines 3-5 have been synthesised by two methods, both involving fluoride ion induced reaction with hexafluoropropene. In re actions initiated by potassium fluoride, extraction of the perfluoroalkylat ed products from the polar aprotic solvent can be achieved using a perfluor ocarbon fluid offering an improved isolation procedure. Perfluoroalkylation initiated by triethylamine in the absence of solvent provides alternative methodology. Both methods are much improved processes for scale-up. Perfluo ro-(isopropyl)-s-triazines 3 and 4 react with a range of oxygen nucleophile s and application of this chemistry to the surface treatment of cellulose i s described. (C) 1999 Elsevier Science S.A. All rights reserved.