Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Patent
1995-05-05
1996-10-15
Gerstl, Robert
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
558425, 570127, C07C21145
Patent
active
055656129
ABSTRACT:
The present invention relates to substituted 2-chloro-3,4,5-trifluorobenzenes of the formula ##STR1## in which R is NO.sub.2, NH.sub.2, CN or Cl, and to a process for the preparation of substituted 2-chloro-3,4,5-trifluorobenzenes of the formula given above, in which R is NO.sub.2, NH.sub.2, CN, Cl or Br, which involves reacting 2,3,4-trifluorochlorobenzene with a nitrating agent in the presence or absence of a water-insoluble solvent at from -10.degree. C. to 50.degree. C., reducing 2-chloro-3,4,5-trifluoronitrobenzene or a mixture which contains 2-chloro-3,4,5-trifluoronitrobenzene and 5-chloro-2,3,4-trifluoronitrobenzene, in the presence of an organic solvent, isolating 2-chloro-3,4,5-trifluoroaniline or a mixture which contains 2-chloro-3,4,5-trifluoroaniline and 5-chloro-2,3,4-trifluoroaniline, diazotizing this product, if desired, and exchanging the diazotized group for a chloride atom, bromide atom or cyanide radical.
REFERENCES:
patent: 5041674 (1991-08-01), Pews et al.
patent: 5072038 (1991-12-01), Klauke et al.
patent: 5162584 (1992-11-01), Moilliet et al.
patent: 5332851 (1994-07-01), Kumai et al.
patent: 5349098 (1994-09-01), Kumai et al.
patent: 5399767 (1995-03-01), Nasu et al.
Chemical Abstracts, vol. 117, No. 23, Dec. 7, 1992, Preparation of 2-chloro-3,4,5-trifluorobenzoic acids, 233606b.
Wray, et al.; J.C.S. Perkin II (1976), pp. 1307-1312.
C.A., 18525d (1966) vol. 65, Imperial Smelting Corp.
Pfirmann Ralf
Schach Thomas
Gerstl Robert
Hoechst Aktiengesellschaft
LandOfFree
Substituted 2-chloro-3,4,5-trifluorobenzenes and a process for t does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Substituted 2-chloro-3,4,5-trifluorobenzenes and a process for t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Substituted 2-chloro-3,4,5-trifluorobenzenes and a process for t will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1247809