Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1986-01-14
1987-05-05
Reamer, James H.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568354, 564462, 558431, C07C 4529
Patent
active
046634878
ABSTRACT:
The invention provides a process for the preparation of 4,4-disubstituted cyclohexadienones of which at least one of the substituents is fluorine, which comprises reacting a compound of formula ##STR1## wheren X represents a hydrogen or halogen atom or an alkyl group, each R independently represents a halogen atom or an alkyl, alkoxy, or cyano or optionally substituted amino group, Z represents a hydrogen atom or an alkyl, acyl or aryloxycarbonyl group, and n is 0 to 4, with hydrogen fluoride and a Pb(IV) compound, in the presence of a compound which acts as a base towards HF.
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Meurs Jan H. H.
Sopher David W.
Reamer James H.
Reper Ronald R.
Shell Oil Company
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