Hexachlorocyclopentadiene → HCID 54503278, compound

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Reaction Steps

For example, a process for synthesizing perfluoro-2-pentyne is described in J. Am. Chem. Soc., vol. 76, p 611 (1954) wherein hexachlorocyclopentadiene is treated with antimony trifluorodichloride to synthesize 1,2-dichloro-3,3,4,4,5,5-hexafluorocyclopentene; and, 2,3-dichloro-1,1,1,4,4,5,5,5-octafluoro-2-pentene as produced as a by-product in this synthetic process is dechlorinated with zinc to give perfluoro-2-pentyne. This process has a problem such that an antimony pentahalide, which is troublesome to handle, must be used for obtaining the raw material (i.e., 2,3-dichloro-1,1,1,4,4,5,5,5-octafluoro-2-pentene), and the yield of perfluoro-2-pentyne is low.

Provenance & Evidence