| abstract |
A process for the preparation of fluorinated propanes and propenes. CF3CH=CH2 is produced from CF3CH2CHF2 by the sequential steps of dehydrofluorination, a reduction, and a second dehydrofluorination in which the same catalyst is preferably used for each step. Preferably the catalysts is palladium on carbon. The process provides the steps of passing CF3CH2CHF2 over a Pd/C catalyst to form CF3CH=CHF; hydrogenating CF3CH=CHF over a Pd/C catalyst to give CF3CH2CH2F; and passing CF3CH2CH2F over a Pd/C catalyst to give CF3CH=CH2. |