A series of novel 7-phenyl-7,12-dihydrobenzo(h)pyrido[2,3-b]naphthydrin-6(5H)-one were synthesized by a one-pot three-component condensation of 2,4-dihydroxyquinoline, 2-amino pyridine and various aromatic aldehydes with sulfamic acid as an enviro-economic catalyst. The salient features of this method consist of high atom economy and yields, short reaction time, non-carcinogenic solvents, and chromatography-free work-up procedure. Fascinatingly, the catalyst can be reused for up to four cycles giving good to excellent yields. By employing this method, a series of 14 pyrido[2,3-b]naphthydrin compounds were synthesized. This procedure is projected as a green avenue in the combinatorial synthesis of biologically active naphthydrin derivatives.
通过一种一锅法三组分凝缩反应,以
硫脲酸作为环保经济催化剂,合成了一系列新型的7-苯基-7,12-二氢苯并(h)
吡啶[2,3-b]
萘啶-6(5H)-酮,反应物包括2,4-二羟基
喹啉、2-
氨基吡啶及各种芳香醛。该方法的显著特点包括高原子经济性和高产率、短反应时间、无致癌性溶剂以及无色谱分离的工作程序。有趣的是,催化剂可以重复使用四次,仍能获得良好到优异的产率。采用此方法合成了一系列14个
吡啶[2,3-b]
萘啶化合物。该程序被认为是合成
生物活性
萘啶衍
生物的一条绿色途径。