Hydrochloric Acid → 2-Chloro-3,5-dimethylpyridine

Participants

Reaction Steps

19.4 g of the 4-formyl-2,4-dimethyl-2,4-dichlorobutyronitrile obtained in Example 2a) are heated for 4 hours to 160°-170° while introducing a weak stream of dry HCl gas. After it has cooled, the dark melt is subjected to steam distillation. The distillate is extracted with diethyl ether and the extract is dried and evaporated to dryness in vacuo. The residual light brown oil is distilled, affording 7.36 g of 2-chloro-3,5-dimethylpyridine in the form of a light brown oil which boils at 110° C./2500 Pa.

Provenance & Evidence