One-pot three-component synthesis of 1-amidoalkyl naphthols and polyhydroquinolines using a deep eutectic solvent: a green method and mechanistic insight
The multicomponent synthesis of 1-amidoalkyl naphthols and polyhydroquinolines has been developed as an atom-economic procedure catalyzed by a deepeutecticsolvent ([CholineCl][ZnCl2]3). The reactions proceed smoothly at low temperatures for a short reaction time without the use of toxic and volatile organic solvents. Deepeutecticsolvents are capable of not only allowing multicomponent reactions
Facile Ionic Liquids-Promoted One-Pot Synthesis of PolyhydroquinolineDerivatives under Solvent Free Conditions
作者:Shun-Jun Ji、Teck-Peng Loh、Zhao-Qin Jiang、Jun Lu
DOI:10.1055/s-2004-820035
日期:——
An efficient synthesis of polyhydroquinoline derivatives were reported via four-component coupling reactions of aldehydes, dimedone, ethyl acetoacetate and ammonium acetate in the presence of a catalytic amount of ionic liquid under solvent free conditions. In the meantime, the catalytic effect of different ionic liquids on the reaction has also been investigated.
Synthesis of polyhydroquinolines and propargylamines through one-pot multicomponent reactions using an acidic ionic liquid immobilized onto magnetic Fe<sub>3</sub>O<sub>4</sub> as an efficient heterogeneous catalyst under solvent-free sonication
作者:Hai Truong Nguyen、Vy Anh Truong、Phuong Hoang Tran
DOI:10.1039/d0ra04008h
日期:——
acid ionic liquid catalyst for the synthesis of polyhydroquinolines and propargylamines under ultrasound irradiation has been developed. LAIL@MNP was synthesized from imidazolium chlorozincate(II) ionic liquid grafted onto the surface of Fe3O4 nanoparticles and evaluated by FT-IR, TGA, SEM, Raman, TEM, ICP-OES, and EDS. The multicomponentsynthesis of polyhydroquinolines and propargylamines proceeded smoothly
研制了一种纳米级Fe 3 O 4负载路易斯酸离子液体催化剂,用于在超声辐照下合成聚氢喹啉和炔丙基胺。LAIL@MNP是由咪唑氯锌酸盐( II )离子液体接枝到Fe 3 O 4纳米粒子表面合成的,并通过FT-IR、TGA、SEM、Raman、TEM、ICP-OES和EDS进行了评价。聚氢喹啉和炔丙基胺的多组分合成顺利进行,以高收率提供所需的产物。LAIL@MNP 可以很容易地从反应混合物中分离出来,并可以重复使用多次,而不会显着降低催化活性。
Biological Activities of Eco-Friendly Synthesized Hantzsch Adducts
Hantzsch adducts with different substituents at the C-4 position were synthesized through multicomponent reactions by using citric or lactic acid as catalysts. To the best of our knowledge, this is the first report on the synthesis of such a class of compounds based on multicomponent reactions catalyzed by non-toxic organic acids. The potential to scavenge reactive nitrogen/oxygen species (RNS/ROS) and
La2O3/TFE: An efficient system for room temperature synthesis of Hantzsch polyhydroquinolines
作者:Sunil U. Tekale、Vijay P. Pagore、Sushama S. Kauthale、Rajendra P. Pawar
DOI:10.1016/j.cclet.2014.03.037
日期:2014.8
found to be an efficient system for the one-pot, four-componentsynthesis of Hantzsch polyhydroquinoline derivatives from aromatic aldehydes, dimedone, ethyl acetoacetate and ammonium acetate at ambient temperature. The catalyst is heterogeneous and reusable, hence can be separated easily and reused. The present method is featured by mild reaction conditions, use of heterogeneous catalyst, non-chromatographic
发现氧化镧(La 2 O 3)与2,2,2-三氟乙醇(TFE)的组合是从芳族醛,二甲酮,乙酰乙酸乙酯单锅四组分合成Hantzsch聚氢喹啉衍生物的有效系统。和乙酸铵在环境温度下。该催化剂是非均质的和可重复使用的,因此可以很容易地分离和再利用。本方法的特点是反应条件温和,使用非均相催化剂,无色谱纯化,反应时间短,收率高,是合成聚氢喹啉的一种有吸引力的途径。