Preparation of polyfluoroenolates

Details Preparation of polyfluoroenolates Preparation of polyfluoroenolates

1987-10-05

1990-03-20

Konopka, Paul E.

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

Organic compounds

Oxygen containing

556 54, 556 81, 556130, 556182, 558293, 560254, C07C 2968, C07C 3342, C07C 3302

Patent

active

049103482

ABSTRACT:
Polyfluoroenolates, R.sup.1 CX.dbd.CR.sup.2 OM (R.sup.1 is F or a perfluoroalkyl group, R.sup.2 is a perfluoroalkyl group, X is F, Cl or Br), are easily formed at good yields by dehydrohalogenation reaction of polyfluoroalcoholates, R.sup.1 CXY--CR.sup.2 HOM (Y is F, Cl or Br), with a strong base such as, e.g., an alkyl metal or an aryl metal. A typical example of the polyfluoroenolates is lithium pentafluoro-2-propenolate which is obtained from hexafluoro-2-propanolate. A polyfluoroenolate of the above general formula can be converted into another polyfluoroenolate having an alkyl or aryl group in place of the halogen X by reaction with an alkyl or aryl metal.

REFERENCES:
patent: 3285975 (1966-11-01), Ahlbrecht
patent: 3702872 (1972-11-01), Regan
patent: 4754082 (1988-06-01), Raab

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