Hexachloroacetone → Fluoropentachloroacetone

Temperatur

140 °C

A 2-liter round bottom flask equipped with a condenser and mechanical stirrer was charged with 1 liter (6.6 moles) of hexachloroacetone, 411.2 g (2.2 moles) of anhydrous antimony trifluoride and 30 ml of antimony pentachloride. The mixture was heated to 140° C. for a period of one hour then cooled to 0° C. The liquid portion of the reaction was decanted from the salts of the reaction and washed with 5×200 ml portions of 12N HCl dried over MgSO4 and distilled. The fraction boiling at 160°-167° C. afforded 700 g of product as a 3:1 mixture of pentachlorofluoro and tetrachlorodifluoro acetones, respectively, and was used without further purification.

1. customA 2-liter round bottom flask equipped with a condenser and mechanical stirrer
2. temperaturethen cooled to 0° C
3. customThe liquid portion of the reaction was decanted from the salts of the reaction
4. washwashed with 5×200 ml portions of 12N HCl
5. dry with materialdried over MgSO4
6. distillationdistilled

ORD-Eintrag

ord-e3e64361bc5044fc9f45b4e1227c01cb

Quelldatensatz

uspto-grants-1985_12

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US04562009