Active fluoromethylene group, useful reagent for the synthesis of fluoro-heterocycles, e.g Pyrimidines; also can produce fluorinated trisubstituted alkenes, ask for refs.
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• Useful fluorinated building block. Reaction of the Na derivative with ɑ ?-unsaturated ketones or esters has been reported. At room temperature, a normal Michael reaction occurs, but on heating, reaction proceeds by a domino pathway providing a route to fluorinated trisubstituted alkenes: J. Org. Chem., 63, 7525 (1998):