Herein, a state-of-the-art one-pot cascade benzannulation technique for the efficacious synthesis of valuable 3-hydroxy-2-methyl carbazoles, a linchpin of more than 25 carbazole-based alkaloids, is unveiled from readily affordable fundamental commodities. The key step of this strategy is gaining aromaticity by site-selective elimination of hydroxyl group controlled by nucleophilicity of the indole
在此,一种最先进的一锅级
联苯环化技术可有效合成有价值的 3-羟基-
2-甲基咔唑,这是超过 25 种
咔唑基
生物碱的关键,从易于负担的基本商品中揭晓。该策略的关键步骤是通过由
吲哚环的亲核性控制的羟基的位点选择性消除来获得芳香性。本策略显示出优异的官能团耐受性和广泛的底物范围。这种便捷方法的实用性通过10 种具有显着
生物活性并因此具有药用重要性的
咔唑基
生物碱的简明全合成得到了很好的例证。