Some new 4‐(aryl)‐2,6‐di‐2‐naphthylpyridines and 4‐(aryl)‐2,6‐di‐2‐thienylpyridines have been prepared through three‐component condensation of 2‐acetylnaphthalene or 2‐acetylthiophene, aromatic aldehydes, and ammonium acetate in presence of 1‐(4‐sulfonylbutyl) pyridinium hydrogensulfate [(CH2)4SO3HPy][HSO4], a Brønstedacidicionicliquid as a green and reusablecatalyst in solvent‐free conditions
通过2-乙酰基萘或2-乙酰基噻吩的三组分缩合反应制备了一些新的4-(芳基)-2,6-二-2-萘吡啶和4-(芳基)-2,6-二-2-噻吩基吡啶,芳族醛和乙酸铵,在1-(4-磺酰基丁基)吡啶鎓硫酸氢盐[(CH 2)4 SO 3 HPy] [HSO 4 ]的存在下,是布朗斯台德酸性离子液体,可在无溶剂条件下用作绿色和可重复使用的催化剂。还准备了一些新的4,4'-(1,4-亚苯基)-双-(2,6-二芳基吡啶)。J.杂环化学。(2011)。
Acidic tributyl phosphonium-based ionic liquid: an efficient catalyst for preparation of diverse pyridine systems <i>via</i> a cooperative vinylogous anomeric-based oxidation
作者:Sepideh Jalali-Mola、Morteza Torabi、Meysam Yarie、Mohammad Ali Zolfigol
DOI:10.1039/d2ra04631h
日期:——
In this study, an acidic phosphonium-based ionic liquid, namely tributyl(3-sulfopropyl)phosphonium trifluoroacetate, was designed and synthesized via a facile and green route. From an accurate perspective, the structure of the prepared ionic liquid was investigated using FT-IR, 1H NMR and 13C NMR spectroscopies, and EDX, elemental mapping and TGA/DTG analysis. In this intensive research, catalytic