Bromine → Perfluoropropionyl chloride

HRID 648156

Reaction equation

HRID 648156 reaction equation
[C:1]([C:5]([C:8]([Cl:11])(Cl)Cl)([F:7])[F:6])([F:4])([F:3])[F:2].[OH:12]S(O)(=O)=O.O=S(=O)=O.BrBr>>[C:1]([C:5]([C:8]([Cl:11])=[O:12])([F:7])[F:6])([F:4])([F:3])[F:2]

Participants

4

Reactant 3

HCID 24408BromineHCID 24681Fuming sulfuric acidHCID 613401,1,1-Trichloro-2,2,3,3,3-pentafluoropropane

Product 1

HCID 67911Perfluoropropionyl chlorideYield 73%

Procedure

In the test apparatus as described in Example I, and following the procedure of Example I, 75 g (0.315 mole) of CF3CF2CCl3, 100 g 65% oleum (0.80 mole as SO3) and 5 g bromine were heated from 25° C. to 60° C. over a 5 hour period. Fractional distillation of the cold trap product, 50 g, gave 42 g (0.23 mole) of CF3CF2COCl, bp 9° C., for a 73% conversion.

Workup

  1. temperaturewere heated from 25° C. to 60° C. over a 5 hour period
  2. distillationFractional distillation of the cold trap product, 50 g

Sources & evidence

ORD record
ord-45f863bfeb5d4400adeb4eb19b33c6f6
Source dataset
uspto-grants-1983_10
Patent number
US04411843

Linked notes

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