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200517.fm Page 55 Friday, March 18, 2005 2:52 PM
2005
Dehalogenation
O 0236
Selective Hydrodechlorination of Fluorinated Arylamines. — Chlorine-containing
anilines and m-phenylenediamines easily undergo selective hydro17- 053 polyfluorinated
dechlorination upon reduction by zinc in aqueous ammonia. Based on this reaction, a
one-pot synthesis of partially fluorinated 4-aminopyridines from 3-chlorotetrafluoroand 3,3-dichlorotrifluoropyridine is accomplished. Compound (XII) can be converted
to quinoline (XV) by Skraup synthesis. — (SELIVANOVA, G. A.; GURSKAYA, L. Y.;
POKROVSKII, L. M.; KOLLEGOV, V. F.; SHTEINGARTS*, V. D.; J. Fluorine
Chem. 125 (2004) 12, 1829-1834; Vorozhtsov Inst. Org. Chem., Sib. Branch Russ.
Acad. Sci., Novosibirsk 630090, Russia; Eng.) — R. Langenstrassen
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