Unusual chemoselective addition of diisopropylzinc to the 2-position of 2,2â²-bipyridine-5,5â²-dicarbonyl compounds affords the adducts with a quaternary carbon, and autoxidation of the adducts reconverts them into the initial compounds with carbonâcarbon bond cleavage.
不寻常的
化学选择性反应表明,
二异丙基锌对2,2'-双
吡啶-5,5'-二酮化合物的2位进行加成,得到具有四次碳的加合物,而这些加合物的自氧化反应则使它们重新转化为原始化合物,并伴随碳-碳键的裂解。