Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1991-08-23
1993-02-09
Reamer, James H.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568323, C07C 4545
Patent
active
051854694
ABSTRACT:
A continuous process is disclosed for the acylation or alkylation of aromatic compounds in hydrogen fluoride. The aromatic compound is sufficiently insoluble in hydrogen fluoride that a two phase reaction medium forms. However, surprisingly, the product acylated or alkylated aromatic compound is soluble in hydrogen fluoride. The present invention particularly relates to use of a continuous, multi-stage process for carrying out the acylation or alkylation reaction. In the multi-stage process, the continuous phase can be either the hydrogen-fluoride rich phase or the aromatic compound-rich phase. The movement of the continuous phase relative to the non-continuous (dispersed) phase can be countercurrent or concurrent. The multi-stage process can be operated in a manner such that the aromatic compound feed to the reaction is entirely consumed or such that unreacted aromatic compound is recycled.
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Curtis Thomas A.
de la Garza Edward M.
Hilton Charles R.
Kenesson Thomas M.
Lindley Daniel D.
Hoechst Celanese Corp.
Hunter, Jr. James M.
Reamer James H.
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