One-pot synthesis of 5,5′-dibromo-2,2′-dipyridylacetylene and its boronic acid derivative, Hyung Joon Jeona, Jung Hoon Choia and Jeung Ku Kang, Tetrahedron Letters, Volume 51, Issue 48, 1 December 2010, Pages 6243-6245,
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dx.doi.org/10.1016/j.tetlet.2010.09.062Заранее благодарю!