Sulfuric Acid → Hexafluoroacetylacetone

Participants

Reaction Steps

A 100-ml eggplant-type flask was charged with 16.2 g of the obtained 1,1,1,5,5,5-hexafluoroacetylacetone dihydrate and 33.0 g of 98% sulfuric acid. Then, the flask was stopped, and the mixture was stirred for 4 hr at room temperature with a magnetic mixer, followed by standing still for 1 hr to have two layers separated from each other. Then, 12.5 g of 1,1,1,5,5,5-hexafluoroacetylacetone were obtained from the organic layer. This product was found by a gas chromatography (detector: FED, column: DB-1, column size: 0.25 mm×60 m) to be 1,1,1,5,5,5-hexafluoroacetylacetone having a purity of 99.9% (areal % in gas chromatography).

Provenance & Evidence