Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1991-08-28
1992-05-12
Reamer, James H.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
570199, 570191, C07C 4543
Patent
active
051130203
ABSTRACT:
The present invention provides a process for producing a p-halogenobenzophenone derivative of a high purity in a high yield at a low cost in the presence of a repeatedly usable catalyst having a long life and free from the problem of waste water treatment without using any chemical of a strong toxicity. According to the present invention, the p-halogenobenzophenone derivative is produced by reacting an (un)substituted benzotrichloride of the following formula (I) with a halogenobezene of the following formula (II) in the presence of a catalyst selected from the group consisting of alumina, nickel sulfate, zirconium oxide, amorphous silica/alumina and a mixture of two or more of them or a catalyst obtained by treating these compounds with an acid and hydrolyzing the resulting bisphenyldichloromethane of the following formula (III): ##STR1## wherein X represents a halogen atom or a hydrogen atom and Y represents a halogen atom.
REFERENCES:
patent: 4414406 (1983-11-01), Fields
patent: 4453012 (1984-06-01), Desbois
patent: 4454350 (1984-06-01), Desbois
patent: 4978798 (1990-12-01), Stults
Kusano Nobuyuki
Sunagawa Kazuhiko
Kureha Kagaku Kogyo K.K.
Reamer James H.
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