Organic compounds -- part of the class 532-570 series – Organic compounds – Nitriles
Patent
1991-05-16
1992-10-06
Brust, Joseph Paul
Organic compounds -- part of the class 532-570 series
Organic compounds
Nitriles
558425, C07C25330, C07C25551
Patent
active
051533502
ABSTRACT:
A process for preparing 3,4,6-trifluorophthalonitrile from 3,4,5,6-tetrachlorophthalonitrile comprising the sequential steps of reductively dechlorinating the tetrachlorophthalonitrile, in the presence of a metal in an aqueous acidic medium, to produce 3,4,6-trichlorophthalonitrile and then subjecting the trichlorophthalonitrile to a chlorine-fluorine exchange by reaction with a fluoride source in a polar aprotic solvent.
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Brokke Mervin E.
Brust Joseph Paul
Lumb J. Trevor
Richardson Peter C.
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