2-Chloro-1,1,1,4,4,4-hexafluoro-2-butene → 1,1,1,4,4,4-Hexafluorobutane

Beteiligte Stoffe

Reaktionsschritte

In a stainless steel autoclave, 40 g of 1,1,1,4,4,4-hexafluoro-2-chloro-2-butene in 300 ml of ethanol were hydrogenated with hydrogen in the presence of 12 g of potassium hydroxide and 25 g of Raney nickel for 3 hours at 20° C. and another 1 hour at 100° C. at a pressure of from 30 to 40 bar. The solid components were then removed from the reaction mixture by filtration and the remaining liquid was distilled to give 16 g of 1,1,1,4,4,4-hexafluorobutane having a boiling point of 25°-30° C. at 1013 mbar. The mass spectrum showed a molecular ion at m/e 166.

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