The condensation of aryl boronic acids with 2,3-dihydroxypyridine gives boronates, which self-assemble to form tetrameric macrocycles as evidenced by X-ray crystallographic analyses.
Mahmut Selman Sakar, Zhangjun Huang, Murat Kaynak, Haiyan Jia
Pierre Gönczy, Niccolo Banterle