The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 5,5′-Dimethyl-2,2′-bipyridine( cas:1762-34-1 ) is researched.Category: benzodioxans.Yamada, Shuya; Kaneda, Takeshi; Steib, Philip; Murakami, Kei; Itami, Kenichiro published the article 《Dehydrogenative Synthesis of 2,2′-Bipyridyls through Regioselective Pyridine Dimerization》 about this compound( cas:1762-34-1 ) in Angewandte Chemie, International Edition. Keywords: pyridine palladium catalyst regioselective dimerization dehydrogenative silver pivalic acid; bipyridyl preparation; 2,2′-bipyridyls; C−H arylation; dehydrogenative coupling; palladium; pyridines. Let’s learn more about this compound (cas:1762-34-1).
2,2′-Bipyridyls have been utilized as indispensable ligands in metal-catalyzed reactions. The most streamlined approach for the synthesis of 2,2′-bipyridyls is the dehydrogenative dimerization of unfunctionalized pyridine. Herein, we report on the palladium-catalyzed dehydrogenative synthesis of 2,2′-bipyridyl derivatives The Pd catalysis effectively works with an AgI salt as the oxidant in the presence of pivalic acid. A variety of pyridines regioselectively react at the C2-positions. This dimerization method is applicable for challenging substrates such as sterically hindered 3-substituted pyridines, where the pyridines regioselectively react at the C2-position. This reaction enables the concise synthesis of twisted 3,3′-disubstituted-2,2′-bipyridyls as an underdeveloped class of ligands.
In addition to the literature in the link below, there is a lot of literature about this compound(5,5′-Dimethyl-2,2′-bipyridine)Category: benzodioxans, illustrating the importance and wide applicability of this compound(1762-34-1).