REACTION OF HEXAFLUOROPROPYLENE AND ITS OLIGOMERS WITH ACETONE OXIME

Reactions of perfluoropropylene and its oligomers with acetone oxime i n the presence of a base afford perfluoroalkyl and/or perfluoroalkenyl ethers of acetone oxime. When heated to 100 degrees C, the 3-perfluor o-2-methyl-2-pentenyl ether of acetone oxime (3) is quantitatively con verted to -bistrifluoromethyl-4-pentafluoroethyl-1-pyrroline (4), the structure of which was established by X-ray diffraction analysis. A co nvenient one-stage synthesis of perfluoro-3-isopropyl-4-methyl-3-pente n-2-one (7) was proposed.