The present methodology describes a versatile pathway to furnish α‐carbolines from relatively stable 2‐amino indole derivatives and 3‐bromopropenal. High substrate tolerance, nonmetallic, more efficient, and mild reaction conditions are important aspects.

中文翻译：

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通过布朗斯台德酸促进的3-溴丙烯醛和2-氨基-1H-1吲哚-3-羧酸乙酯的脱羧环化反应合成吡啶并[2,3-b]吲哚

本方法学描述了从相对稳定的2-氨基吲哚衍生物和3-溴丙烯醛制备α-咔啉的通用途径。高基材耐受性，非金属，更有效和温和的反应条件是重要的方面。