2(3H)-Furanone, 3,3,4,4,5,5-hexafluorodihydro- synthesis
- Product Name:2(3H)-Furanone, 3,3,4,4,5,5-hexafluorodihydro-
- CAS Number:702-35-2
- Molecular formula:C4F6O2
- Molecular Weight:194.032
Yield:702-35-2 7%
Reaction Conditions:
with sulfur trioxide
Steps:
3 EXAMPLE 3
EXAMPLE 3 Into an autoclave, were charged 507 g (1.9 moles as SO3) of fuming sulfuric acid containing 30% of SO3 and 85 g (0.19 mole) of 1,4-diiodoperfluorobutane of the formula the reaction was conducted at 85° to 95° C. for 1.5 hours. The reaction mixture was collected in a flask cooled in a dry-ice-ethanol bath. Thereafter, it was separated by distillation whereby 12 g (33% yield) of perfluoro- γ-butyrolactone and 3 g (7% yield) of perfluorosuccinic difluoride were obtained as a fraction having a boiling point of 18° C. Another fraction having a boiling point of 1° C., was also obtained.
References:
US4116977,1978,A
375-50-8
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