An iron‐based metal‐organic framework, Fe(BTC) has been used as an efficient heterogeneous and sustainable catalyst for the synthesis of 2,4‐diarylquinolines via three‐component Povarov reaction. The presence of a high concentration of coordinatively unsaturated Fe³⁺ sites of Fe(BTC) efficiently catalyzes the formation of diarylquinolines in the presence of environmentally friendly air as an oxidant. The present methodology avoids the stoichiometric amount of catalyst and sensitive reagents. A series of 2,4‐diarylquinolines have been synthesized via Povarov synthesis in good to excellent yields with good functional group tolerance. The catalyst was easily separated by simple filtration and reused for more than five times without any remarkable loss in activity. Hot filtration test, FTIR, PXRD and SEM characterizations of reused catalyst confirmed the true heterogeneity and the stability of the catalyst. The efficiency of Fe(BTC) catalyst is compared with other homogeneous catalytic systems which enlighten the uniqueness of the present methodology.

中文翻译：

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铁MOF催化的多米诺环化和芳构化策略合成2,4-二芳基喹啉

Fe（BTC）铁基金属有机框架已被用作通过三组分Povarov反应合成2,4-二芳基喹啉的有效多相且可持续的催化剂。Fe（BTC）的高浓度配位不饱和Fe ³⁺位点的存在可在环境友好的空气作为氧化剂的存在下有效催化二芳基喹啉的形成。本方法避免了化学计量的催化剂和敏感试剂。一系列2,4-二芳基喹啉通过Povarov合成具有良好的收率和优异的收率以及良好的官能团耐受性。通过简单的过滤就可以容易地分离出催化剂，并且可以重复使用五次以上，而活性没有任何明显的损失。重复使用的催化剂的热过滤试验，FTIR，PXRD和SEM表征证实了催化剂的真正非均质性和稳定性。将Fe（BTC）催化剂的效率与其他均相催化系统进行了比较，这些系统启发了本方法学的独特性。