The present invention discloses a preparation method for 6-chloro-2-trichloromethyl pyridine, in which 2-methyl pyridine hydrochloride or 2-chloromethyl pyridine is used as an initiator and a considerably excess amount of chlorine gas reacts with 2-methyl pyridine hydrochloride or 2-chloromethyl pyridine at a high temperature to form purer 6-chloro-2-trichloromethyl pyridine. The present invention provides a highly selective, high-yield and improved environmental-ly protective method.
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Page/Page column 5
(2010/04/23)
PREPARATION OF 3,6-DICHLORO-2-TRICHLOROMETHYLPYRIDINE BY VAPOR PHASE CHLORINATION OF 6-CHLORO-2-TRICHLOROMETHYLPYRIDINE
A mixture containing 5,6-dichloro-2-trichloromethylpyridine and 3,6-dichloro-2-trichloromethylpyridine enriched in 3,6-dichloro-2-trichloromethylpyridine is obtained by chlorinating 6-chloro-2-trichloromethylpyridine in the vapor phase using a Type L zeolite catalyst.
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Page 3-4
(2008/06/13)
DESTRUCTIVE CHLORINATION OF 3,4,5-TRICHLORO-2-(TRICHLOROMETHYL)PYRIDINE
The extensive destructive chlorination of 3,4,5-trichloro-2-(trichloromethyl)pyridine proceeds by both thermal (160-245 deg C) and photochemical pathways.Perchloropyridine, perchloropicoline, and carbon tetrachloride are formed.The chlorinated derivatives of pyridine are formed by the loss of the CCl3 group with its subsequent replacement by a chlorine atom.
Emel'yanov, V. I.,Stul', B. Ya.,Korolev, B. M.
p. 1168 - 1171
(2007/10/02)
MACROKINETIC RELATIONSHIPS OF HIGH-TEMPERATURE CHLORINATION OF 2-PICOLINE HYDROCHLORIDE
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Emel'yanov, V. I.,Stul',B. Ya.
p. 2362 - 2365
(2007/10/02)
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