Bromination of 3, 3, 3-trifluoropropene in 20% oleum, followed by treatment with acetic acid furnishes 2-bromo-3, 3, 3-trifluoropropyl acetate in quantitative yield, which upon acid hydrolysis and cyclization with alkali affords 3, 3, 3-trifluoropropene oxide (TFPO) in 63% overall yield.
