Process for the preparation of polyhalogenated benzotrifluorides

Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing

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C07C 1908

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061145904

ABSTRACT:
Polyhalogenated benzotrifluorides can be reacted with chlorides from the series of Friedel-Crafts catalysts to give the corresponding benzotrichlorides, which can be hydrolysed by water in the presence of iron(III) chloride to give the corresponding benzoyl chlorides. These are suitable as intermediate products for the preparation of active compounds for medicaments and feed additives.

REFERENCES:
patent: 1557154 (1925-10-01), George
patent: 1880169 (1932-09-01), Bennett et al.
patent: 3411886 (1968-11-01), Burk
patent: 4276231 (1981-06-01), Bockmann et al.
patent: 4582948 (1986-04-01), Tang et al.
patent: 4588726 (1986-05-01), Petersen et al.
patent: 4704483 (1987-11-01), Tang et al.
patent: 4769492 (1988-09-01), Kaieda et al.
patent: 4978769 (1990-12-01), Kysela et al.
patent: 5072038 (1991-12-01), Klauke et al.
patent: 5075319 (1991-12-01), Lesher et al.
patent: 5169853 (1992-12-01), Lesher et al.
patent: 5200548 (1993-04-01), Klauke et al.
patent: 5599980 (1997-02-01), Marhold et al.
Anderson, L et al J. Chem. Soc. C (1969) (2) 211-17.
Pozdnyakovich, Yu et al, J. Fluorine Chem (1974) 4(3) 283-96.
Bailey, J et al J. Fluorine Chem. (1987), 37(1) 1-14.
Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, Novosibirsk, vol. 27, No. 3, pp. 609-618, Mar. 1991; "Preparation of Polyfluorobenzotrihalides by the Reactions of Octafluorotoluene and its . . . ", K.V. Dvornikova, et al.
Derwent Abstract: Pharmaceuticals, p. 27, Week 9213, ASAG, B05, 92-102796/13 JO 4049-263-A; "2,3,4,5-Tetra:fluoro:benzoic acid . . . ", Asahi Glass KK. no date.
Derwent Abstract: Pharmaceuticals, p. 27, Week 9213, ASAG, B05, 92-102797/13 JO 4049-264-A; "2,3,4,5-Tetra:fluoro:benzoic acid . . . ", Asahi Glass KK. no date.
Derwent Abstract: Pharmaceuticals, p. 18, Week 9028, ASAG, B02, 90-214423/28 JO 2145-538-A; "Pharmaceuticals Intermediate Fluoro-benzoic Acids . . . ", Asahi Glass KK. no date.
K.V. Dvornikova, et al., Preparation of Polyfluorobenzotrihalides by the Reactions of Octafluorotoluene and its Derivatives With Aluminum Halides. Synthesis of Polyfluorostilbenes and Decafluortolan, Plenum Publishing Corporation, pp. 525-532, (1991).
L. Andersen, et al., J. Chem. Soc. C., (1969), (2), 211-17.
Y. Pozdnyakovich, et al., J. Fluorine Chem., (1974), 4,(3), 283-96.
J. Bailey, et al., J. Fluorine Chem., (1987), 37, (1), 1-14.
Chemical Abstracts, Abstract of DE 2,344,603, Abstract No. 8638u (1974).

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