Process for the preparation of N-(2-chloro-pyridin-5-yl-methyl)ethylenediamine
AssigneeBayer Aktiengesellschaft
InventorReinhard Lantzsch
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Abstract
The present invention relates to a new process for the preparation of N-(2-chloro-pyridin-5-yl-methyl)-ethylenediamine. The process is characterised in that 6-chloronicotinaldehyde is reacted with 1,2-ethylenediamine and a reducing agent at temperatures between -30.degree. C. and +50.degree. C. The reducing agents employed are preferably metal hydride complexes and, in particular, sodium borohydride. N-(2-Chloro-pyridin-5-yl-methyl)-ethylenediamine, which is to be prepared by the process according to the invention, can be used as intermediate for the preparation of insecticides.
Claims8
Process for the preparation of N-(2-chloro-pyridin-5-yl-methyl)-ethylenediamine, of the formula (I), ##STR7## which comprises reacting 6-chloronicotinaldehyde, of the formula (II) ##STR8## with about 1 to 5 times its molar amount of 1,2-ethylenediamine of the formula (III)
- H.sub.2 N--CH.sub.2 --CH.sub.2 --NH.sub.2 (III)
- and about 0.5 to 3 times its molar amount of a reducing agent in the presence of an alcohol as diluent at a temperatures between -30.degree. C. and +50.degree. C.
Dependencies are inferred from the claim text.