Hexafluoro-2- -2-propyl methacrylate

Hexafluoro-2-(4-fluorophenyl)-2-propyl acrylate (la) and hexafluoro-2-(4-fluorophenyl)-2-propyl methacrylate (lb)7 were prepared by gradually adding a solution of 0.06 mol of acryloyl or methacryloyl chloride, respectively, in 20 ml of tetrahydrofuran (THF), to a cooled solution of 0.04 mol of HFAF in 50 ml of THF containing 0.06 mol oftriethylamine. The mixture was stirred for 10-12 h at room temperature it then was poured into 200ml of water, and the new product was extracted with diethyl ether. After the diethyl ether was evaporated, the crude product was purified by column chromatography using a mixture of hexane and dichloromethane (1 1 by volume) as the elution solvent. Distillation afforded la, b.p. 72-74°C/10"3 mm Hg, and lb, b.p. 48-52oC/103 mm Hg. 

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