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US 7,888,538 B1Granted
Catalyzed olefin insertion
AssigneeE.I. du Pont de Nemours and Company
InventorsSheng Peng, Kenneth Gene Moloy
Life of this patent
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Abstract
A process for the insertion of a partially fluorinated olefin into a fluorinated iodide in the presence of a nickel catalyst at a temperature of a maximum of 150° C. with an initial rate of 0.01 mole/hour without loss of selectivity is disclosed, as well as use of the process for insertion of a perfluorinated olefin with an initial rate of 0.04 mole/hour.
Claims10
A process for the preparation of a compound of Formula (I)
- Rf[C(X1X2)C(Y1Y2)]nI (I)
- wherein
- each X1, X2, Y1, and Y2 is independently fluorine, hydrogen, fluoroalkyl, or fluoroalkoxy;
- n is 1, 2, or 3;
- and
- Rf is a perfluorinated or partially fluorinated carbon chain optionally interrupted with catenary oxygen or catenary sulfur;
- comprising contacting, at a temperature of a maximum of 150° C. and at an initial rate of a minimum of 0.01 mole/hour, a partially fluorinated olefin with a fluoroalkyl iodide RfI wherein Rf is defined as above, in the presence of a catalyst, wherein said catalyst is
- iii) Ni(Z)m wherein each Z is independently PR3;
- m is 2 to 4;
- R is phenyl, alkyl substituted phenyl, or CrH2r+1;
- and r is 1 to 10;
- or
- iv) a mixture of Ni and Z wherein Z is as defined above,
- to yield a compound of Formula (I) with a selectivity for n is 1 of at least 65%.
11 more elements
Dependencies are inferred from the claim text.