Choline peroxydisulfate oxidizing Bio-TSIL: triple role player in the one-pot synthesis of Betti bases and gem-bisamides from aryl alcohols under solvent-free conditions
The efficient one‐pot syntheses of Bettibases by the three‐component reaction of aromatic aldehyde, 2‐naphthalen, and acetonitrile (or benzamide) catalyzed by 1‐methyl‐3‐(2‐(sulfooxy)ethyl)‐1H‐imidazol‐3‐ium chloride is reported. The solvent can be recycled easily.
A modified reaction for the preparation of amidoalkyl naphthols
作者:Hamid Reza Shaterian、Hossein Yarahmadi
DOI:10.1016/j.tetlet.2007.12.093
日期:2008.2
An efficient synthesis of amidoalkyl naphthols using FeCl3·SiO2 as a heterogeneous catalyst is described. This thermal solvent-free procedure offers advantages such as shorter reaction times, simple work-up, excellent yields, and recovery and reusability of the catalyst.
An efficient and direct protocol for the preparation of amidoalkyl naphthols employing a multi-component, one-pot condensation reaction of beta-naphthol, aromatic aldehydes and acetamide in the presence of ferric hydrogensulfate under solvent, solvent-free and microwave conditions is described. The thermal solvent-free and microwave green procedures offer advantages such as shorter reaction times,
Three-Component reaction between 2-naphthol, Aromatic Aldehydes and Acetonitrile in the Presence of Chlorosulfonic Acid Yields 1-(Acetylamino (Aryl)Methyl)-2-Naphthols
The one-pot, three-component reaction between aryl aldehydes, 2-naphthol, and acetonitrile in the presence of chlorosulfonic acid affords 1-[acetylamino(aryl)methyl]-2-naphthols in excellent yields.
2-Hydroxy-5-sulfobenzoic acid: an efficient organocatalyst for the three-component synthesis of 1-amidoalkyl-2-naphthols and 3,4-disubstituted isoxazol-5(4H)-ones
(2-HSBA) efficiently catalyzed the one-pot three-component synthesis of a wide variety of 1-amidoalkyl-2-naphthols and 3,4-disubstituted isoxazol-5(4 H )-ones. The three-component process of substituted benzaldehydes, 2-naphthol, and amides (benzamide and acetamide) or urea occur using 10 mol% of 2-HSBA as an organocatalyst under solvent-free reaction conditions (SFRCs) at 100 °C. It was also found that
2-羟基-5-磺基苯甲酸(2-HSBA)有效催化多种1-酰胺基-2-萘和3,4-二取代异恶唑-5(4 H )-ones的一锅三组分合成 。在100°C无溶剂反应条件(SFRC)下,使用10 mol%的2-HSBA作为有机催化剂,发生了取代苯甲醛,2-萘酚和酰胺(苯甲酰胺和乙酰胺)或尿素的三组分过程。还发现在室温下在水性条件下使用15mol%的2-HSBA可获得制备3,4-二取代的异恶唑-5(4 H )-1的最佳结果 。反应很容易完成,在3–25分钟内(对于氨基烷基萘酚)和70–120分钟(对于3,4-二取代异恶唑-5(4 H )-ones),而预期产品的收率为82–97%。可以将催化剂回收并在模板反应中重复使用几次。该方法的优点是方便,操作程序简单,成本效益,不使用有害有机溶剂以及催化剂的商业可获得性。