A simple and efficient synthesis of novel 3-(quinolin-2-yl)- and 3,6-bis(quinolin-2-yl)-9H-carbazoles, utilizing sodium ethoxide as a catalyst via a Friedländer condensation reaction between 3-acetyl-9-ethyl-9H-carbazole or 3,6-diacetyl-9-ethyl-9H-carbazole and β-aminoaldehydes or β-aminoketones is described. All of the title compounds were obtained in good yields of 52–72% and their structures were confirmed by IR, 1H NMR, MS, and elemental analysis.
本文介绍了一种简单高效的合成方法,利用乙氧基钠作为催化剂,通过3-乙酰基-9-乙基-9H-咔唑或3,6-二乙酰基-9-乙基-9H-咔唑与β-氨基醛或β-氨基酮之间的Friedländer缩合反应,合成了新型的3-(喹啉-2-基)-和3,6-双(喹啉-2-基)-9H-咔唑。所有目标化合物的产率均在52-72%之间,并通过红外光谱、1H NMR、质谱和元素分析进行了结构确认。