Synthesis of perfluoroalkyl iodides

Details Synthesis of perfluoroalkyl iodides Synthesis of perfluoroalkyl iodides

1995-05-30

1997-07-22

Siegel, Alan

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

C07C 2118

Patent

active

056505450

ABSTRACT:
The invention relates to a continuous process for the preparation of perfluoroalkyl iodides by thermal telomerization, in the gas phase, of tetrafluoroethylene with pentafluoroethyl iodide or heptafluoroisopropyl iodide in a tubular reactor.
To improve the selectivity for a telomer of the desired extent, the telomers of lesser extent are recycled to at least one point in the reactor, which is situated between one-twentieth and three-quarters the length of the tube.

REFERENCES:
patent: 3404189 (1968-10-01), Blockl

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