Reaktion #2633

Reaktionsgleichung

CF3CH2CF3

CCl3CH2CCl3

KOH

→

CF3CH2CF2Cl

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigemodel autoclave fitted with a condenser
2. 2
   Sonstigewas evacuated
3. 3
   Temperaturcooled to about -40° C.
4. 4
   TemperaturThe temperature was increased to 120° C.
5. 5
   Temperaturmaintained at that temperature for a total of 22 h
6. 6
   Sonstigewas attached to two -78° C.

Vorschrift

A 600 mL, magnetically stirred, model autoclave fitted with a condenser (maintained at -10° C.), was evacuated, cooled to about -40° C., and charged with 0.6.9 g (0.036 mol) TiCl4 followed by 64 g (0.255 mol) CCl3CH2CCl3, and 102.5 g (5 mol) HF. The temperature was increased to 120° C. and maintained at that temperature for a total of 22 h. During the heating period, pressure in excess of 400 psig was periodically vented to an aqueous KOH scrubber which was attached to two -78° C. cold traps. At the end of the heating period, the remainder of the autoclave contents were slowly vented. The cold traps contained 36.1 g material which by GC analysis, contained 14.5% CF3CH2CF3 and 84.0% CF3CH2 CF2Cl, corresponding to a yield for CF3CH2CF2Cl of 69%.

Quelle