Potassium Carbonate → 1,1,1,2,4,4,5,5,5-Nonafluoropentane

Temperatur

30 °C

To 1,1,1,2,3,4,4,5,5,5-decafluoropentane (at a purity of 99.9%, 20 g, 79.4 mmol) was added 100 ml of an aqueous 4M potassium carbonate solution; and the resulting mixture was agitated at 30° C. for 10 hours. The reaction solution was separated into two layers; and the organic layer was again charged, together with 5% palladium carbon (0.55 g) and 0.33 g of tridecane, in a 70-ml autoclave, for hydrogenation at 50 ° C. under a hydrogen pressure of 6 kg/cm2. When hydrogen absorption was ceased 15 hours later, the reaction was terminated; then, the resulting solution was neutralized with saturated sodium bicarbonate solution, followed by distillation, to recover nonafluoropentane (1,1,1,2,4,4,5,5,5- and 1,1,1,3,4,4,5,5,5-nonafluoropentane mixture)(at a total purity of 99.7%; 10.4 g).

1. customThe reaction solution was separated into two layers
2. additionand the organic layer was again charged, together with 5% palladium carbon (0.55 g) and 0.33 g of tridecane, in a 70-ml autoclave, for hydrogenation at 50 ° C. under a hydrogen pressure of 6 kg/cm2
3. customWhen hydrogen absorption
4. waitwas ceased 15 hours
5. customlater, the reaction was terminated
6. distillationfollowed by distillation
7. customto recover nonafluoropentane (1,1,1,2,4,4,5,5,5- and 1,1,1,3,4,4,5,5,5-nonafluoropentane

ORD-Eintrag

ord-3056a328db204fa7904319d8cb81b934

Quelldatensatz

uspto-grants-2001_11

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US06312759B1