From six to seven: 2,2′‐Di(arylethynyl)biphenyls undergo a skeletal rearrangement in the presence of a platinum(II) catalyst to afford polycyclic aromatic compounds containing an azulene unit. The reaction involves CC bond cleavage of a benzene ring, which expands into a seven‐membered ring.
从六到七个:2,2'-二(芳基
乙炔基)
联苯在
铂(II)催化剂的存在下进行骨架重排,以提供含氮杂单元的多环芳族化合物。该反应涉及苯环的CC键裂解,该环扩展成七元环。