Process for preparation of chlorine derivatives of pyridine compounds and initiators used in process

Abstract From the Canadian patent

The reactions of chlorination of the pyridine compounds are conducted by means of molecular chlorine with the use, as, free-radical forming initiator of a decachloro butane or an, octachlorobutene such as octachlorobutene-1 or a crude mixture of these chlorine-containing products obtained by additive chlorination of hexachlorobutadiene-1,3. Good rates of conversion are obtained, and good yields at moderate temperatures. The method is applied, for example, to the chlorination of pyridine and beta-picoline.