Disclosed is a method for preparing 2,2'-dipyridine and derivatives thereof. The method comprises: using pyridine represented by formula I or a derivative thereof as a raw material to generate 2,2'-dipyridine represented by formula II by performing dehydrogenative coupling under the action of a supported catalyst in the presence of additives, wherein R is H, C1-C2 alkyl, Cl, or Br. The method of the present invention features wide adaptability to raw materials, high atomic utilization rate, high catalyst activity, long service life, and fewer by-products.
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