of 2-amino- and 2-hydroxybenzoic acids with internal alkynes proceeds efficiently in the presence of a rhodium/copper catalyst system under air to afford the corresponding 8-substituted isocoumarin derivatives, some of which exhibit solid-state fluorescence. Depending on conditions, 4-ethenylcarbazoles can be synthesized selectively from 2-(arylamino)benzoic acids. The oxidative coupling reactions of
在空气中,在
铑/
铜催化剂体系的存在下,2-
氨基和
2-羟基苯甲酸与内部
炔烃的直接氧化偶联有效地进行,从而得到相应的8-取代的异
香豆素衍
生物,其中一些表现出固态荧光。根据条件,可以从2-(芳基
氨基)
苯甲酸选择性地合成4-
乙烯基咔唑。还描述了杂
芳烃羧酸以及芳族二酸与
炔烃的氧化偶联反应。