METHOD FOR PRODUCING 2,3-DICHLORO-5-(TRICHLOROMETHYL)PYRIDINE
First Claim
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1. A method for preparing 2,3-dichloro-5-(trichloromethyl)pyridine of formula [II] by a process which comprises the steps:
- (1) preparing a reaction mixture comprising a compound of the general formula [I] and PCl5,
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Abstract
The present invention relates to a novel process for producing of 2,3-dichloro-5-(trichloromethyl)pyridine by using PCl5 as chlorinating agent at elevated temperature and pressure.
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Citations
34 Claims
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1. A method for preparing 2,3-dichloro-5-(trichloromethyl)pyridine of formula [II] by a process which comprises the steps:
(1) preparing a reaction mixture comprising a compound of the general formula [I] and PCl5, - View Dependent Claims (2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34)
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3. The method according to claim26, wherein the additional chlorinating agent is Cl2.
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29. The method according to claim28, wherein the pesticidal active compound is a herbicide, an insecticide or a fungicide.
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30. The method according to claim 39, wherein the pesticidal active compound is fluazinam, fluopicolide, haloxyfop, chlorfluazuron or fluazuron.
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