Aerobic oxidative dimerization of hydroxystilbenoids is described. A Cr–salen complex catalyzed the dimerization of hydroxystilbenoids in 1,1,1,3,3,3-hexafluoroisopropanol to form compounds comprising a natural product-like scaffold (quadrangularin) or its precursor depending on the aromatic substituents. The addition of a catalytic amount of scandium triflate [Sc(OTf)₃] to the reaction system altered the reaction outcome to give a different natural product-like compound, a pallidol-type dimer.

中文翻译：

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铬催化羟基芪类化合物的受控有氧氧化二聚


描述了羟基二苯乙烯类化合物的有氧氧化二聚。 Cr-salen 络合物催化 1,1,1,3,3,3-六氟异丙醇中羟基二苯乙烯类化合物的二聚，形成包含天然产物样支架（四边形）或其前体（取决于芳香族取代基）的化合物。向反应体系中添加催化量的三氟甲磺酸钪[Sc(OTf) ₃ ]改变了反应结果，得到了不同的天然产物样化合物，苍白球醇型二聚体。