excellent yields starting from 2-alkynylbenzoates and arenediazonium salts. The strategy involves a domino arylation/oxo-cyclization catalysed by a dual photoredox/goldcatalytic system. The reactions run under mild conditions at room temperature in wet acetonitrile under irradiation with a blue-LED lamp, in the presence of a cationic gold catalyst and a cheap organic photocatalyst. The scope is quite broad
从 2-炔基苯甲酸酯和芳烃重氮盐开始,已经以良好至优异的产率合成了几种异香豆素。该策略涉及由双光氧化还原/金催化系统催化的多米诺芳基化/氧合环化。该反应在温和条件下室温下在湿乙腈中进行,在蓝色 LED 灯照射下,在阳离子金催化剂和廉价有机光催化剂存在下进行。范围很广,允许制备在 3 位和 4 位不同的二取代的异香豆素。提出了一种合理的反应机理。