苯磺酸铜催化“一锅法”合成1-氨甲酸酯基烷基-2-萘酚

以2-萘酚、醛和氨基甲酸酯为原料,苯磺酸铜为催化剂,在加热、无溶剂条件下,通过三组分"一锅法"合成了1-氨甲酸酯基烷基-2-萘酚衍生物.考察了催化剂用量、反应温度和溶剂对产品收率的影响.结果表明,仅2 mol%苯磺酸铜就可以催化该反应的进行.反应结束后,催化剂重复使用4次,催化活性无明显下降.通过1H NMR,13C NMR,IR,质谱和元素分析对产品结构进行表征.提出了可能的催化作用机理.     

无溶剂条件下一锅法催化合成胺基烷基萘酚衍生物

无溶剂条件下,邻甲基苯磺酸铜可有效催化2-萘酚、醛和胺三组分一锅法合成胺基烷基萘酚衍生物.考察了溶剂条件及催化剂用量对产率的影响.经催化剂循环研究,该催化剂重复使用4次仍保持较高活性.产物的结构通过熔点,IR,1HNMR,13CNMR,质谱和元素分析进行测定和结构表征.同时给出了该反应可能的反应机理.     

氯化铝高效催化合成1-(N-氨甲酸酯基)烷基-2-萘酚

无溶剂条件下,氯化铝可有效催化2-萘酚、醛和氨基甲酸酯三组分"一锅法"合成1-(N-氨甲酸酯基)烷基-2-萘酚。确定了较佳反应条件,产品经熔点、IR、1H NMR、元素分析进行表征。提出了可能的催化作用机理。     

无水硫酸铁催化多组分反应合成酰胺基烷基萘酚(英文)

无溶剂、80℃条件下,无水硫酸铁可有效催化2-萘酚、醛、和胺/尿素三组分"一锅法"合成酰胺基烷基萘酚。考察了溶剂条件和催化剂用量对产率的影响。与已报道方法相比,该方法具有反应条件温和、反应时间短、产率高、不使用有机溶剂、催化剂廉价易得和后处理步骤简便等优点。     

聚合物负载磺酸催化的三组分反应合成1-酰胺烷基-2-萘酚

聚合物负载磺酸，一种环境友好的固体酸催化剂，可以有效地催化2-萘酚、脲或酰胺和醛的三组分“一锅”反应生成1-酰胺烷基-2-萘酚。该方法得率高，操作简单。     

甲酸催化的室温无溶剂条件下利用Paal-Knorr反应合成吡咯衍生物的方法

以甲酸为催化剂, 无需使用任何溶剂, 在室温条件下, 多种伯胺(包括脂肪胺、芳香胺)与2,5-己二酮发生Paal-Knorr缩合反应, 生成相应的吡咯衍生物. 该方法反应条件温和、操作简便、反应时间比较短、产物易于分离、收率高、环境友好.     

酸性功能化离子液体催化“一锅法”合成酰胺烷基萘酚

用磺酸型离子液体1-甲基-3-磺酸丙基咪唑硫酸氢盐([MIMPS][HSO₄])催化β-萘酚、芳香醛和酰胺（或脲）3组分“一锅法” 类Ritter反应合成了酰胺烷基萘酚。 投料比为n(β-萘酚)∶n(芳香醛)∶n(酰胺或脲)∶n([MIMPS][HSO₄])=1∶1∶1.3∶0.1,无需溶剂,恒温125 ℃反应5～40 min,通过简单水洗抽滤即可分离产物,酰胺烷基萘酚产率为85%～97%。 离子液体[MIMPS][HSO₄]可回收重复使用4次,其催化活性无明显降低。 探讨了醛、酰胺或脲结构对反应的影响及可能的反应机理。     

磷钼酸：一种有效的催化三组分反应合成1-酰胺烷基-2-萘酚的Keggin型杂多酸

磷钼酸,一种环境友好的杂多酸催化剂,可以有效地催化2-萘酚、脲或酰胺和醛的三组分“一锅”反应生成1-酰胺烷基-2-萘酚。该方法得率高,操作简单。     

无溶剂条件下离子液体[Hnmp]HSO4催化一锅法合成2 -氨基苯并噻唑-芳甲基-2-萘酚

以离子液体[Hnmp]HSO₄为催化剂, 在无溶剂条件下催化芳香醛、2-氨基苯并噻唑和2-萘酚合成一系列的2 -氨基苯并噻唑-芳甲基-2-萘酚. 该方法条件温和, 反应时间短, 产率高和对环境友好. 此外催化剂可以方便地回收, 且循环使用四次其催化活性并没有显著降低. 目标产物经过了¹H NMR, IR, MS和元素分析确证.     

一锅法有效合成氨基甲酸酯类化合物

以四甲基胍(TMG)为催化剂, 乙腈(ACT)为溶剂, 利用CO₂、胺和烷基氯三组分在0.10 MPa, 70～80 ℃条件下, 一锅法有效合成氨基甲酸酯类化合物, 并研究了收率和产率的影响. 结果表明, 最优反应条件为n(胺)∶n(烷基氯)＝3～4、反应温度70～80 ℃、反应时间2～3 h、酯分离收率达68.7%～81.3%, 酯纯度达到99.9%     

One-pot synthesis of xanthene derivatives under solvent-free conditions

One-pot synthesis of aryl-14H-dibenzo[a,j]xanthene and 1,8-dioxo-octahydroxanthene derivatives using montmorillonite K10 as reusable eco-friendly catalyst under solvent-free conditions is described.     

One-pot synthesis of 2-amino-3-cyanopyridine derivatives under solvent-free conditions

A series of 2-amino-3-cyanopyridines were obtained from aryl aldehydes, substituted acetophenones, malononitrile and ammonium acetate in good to excellent yields by proceeding through a simple, mild and efficient procedure utilizing N,N,N′,N′-tetrabromobenzene-1,3-disulfonamide [TBBDA] and poly(N-bromo-N-ethylbenzene-1,3-disulfonamide) [PBBS] as catalysts.     

One-pot synthesis of pyrimidines under solvent-free conditions

N,N,N’,N’-Tetrabromobenzene-1,3-disulfonamide was used as an efficient catalyst for the one-pot synthesis of pyrimidine derivatives in excellent yields from triethoxymethane, ammonium acetate, and various ketone derivatives at 100–110 °C under solvent-free conditions.     

One-pot facile synthesis of acridine derivatives under solvent-free condition

N,N’-Dibromo-N,N’-1,2-ethanediylbis(p-toluenesulfonamide) [BNBTS] as a reusable catalyst promoted one-pot synthesis of benzo[c]acridines in good to high yields under three-component reaction from anilines, aldehydes and cyclic 1,3-dicarbonyl compounds under solvent-free conditions.     

Wet cyanuric chloride promoted efficient synthesis of amidoalkyl naphthols under solvent-free conditions

An efficient and direct procedure has been developed for the preparation of amidoalkyl naphthols by a one-pot condensation of aryl aldehydes.2-naphthol and area or amides,in the presence of wet-cyanuric chloride(wet-TCT)as a catalyst.The reactions were carried out under solvent.flee media.The present methodology offers several advantages such as excellent yields,simple procedure and eco-friendly reaction condition.     

One-pot multicomponent synthesis of polyhydroquinolines under catalyst and solvent-free conditions

Abstract

An efficient one-pot condensation has been developed for the synthesis of polyhydroquinolines via a four component coupling reaction of aldehyde, dimedone, ethyl acetoacetate, and ammonium acetate under catalyst and solvent-free conditions. Non-hazardous experiment procedure, operational simplicity, mild reaction conditions, and the compatibility with various functional groups represent the advantages of the present method.     

Evaluation of catalytic activity of two newly prepared functionalized sulfonic acids ionic liquids in the synthesis of carbamatoalkyl naphthols under mild conditions

Russian Journal of General Chemistry - Catalytic activity of two newly prepared functionalized sulfonic acids ionic liquids, [MPyrrSO3H]Cl (IL1) and [MMorSO3H]Cl (IL2), is studied in one-pot...     

Synthesis, characterization, and catalytic application of PbS nanoparticles for the synthesis of amidoalkyl naphthols under solvent-free conditions

A simple one-pot synthesis has been developed for the synthesis of amidoalkyl naphthols using an efficient and recyclable nanocrystalline PbS catalyst under solvent-free condition. Using this nanocrystalline solid catalyst, the reactions could be carried out under mild reaction conditions with very good yield (85–95 %). This catalyst could be recycled very easily, which makes this methodology environmentally benign. The biologically active drug-like molecule 1-aminomethyl-2-naphthol derivatives can be easily obtained from 1-amidomethyl-2-naphthol by amide hydrolysis reaction in the presence of PbS nanoparticles. Characterization of the catalyst was performed by X-ray diffraction, transmission electron microscopy, and adsorption/desorption analysis (BET).     

Three component,one-pot synthesis of amidoalkyl naphthols using polyphosphate ester under solvent-free conditions

Amidoalkyl naphthols are synthesized via a simple, one-pot, three-component reaction between aldehydes, 2-naphthol and amides or ureas using polyphosphate ester (PPE) as a reaction mediator under solvent-free conditions in good to excellent yields. High yields, short reaction time, easy work-up, elimination of solvents and toxic catalysts are the advantages of this procedure.