Betti bases via a one-pot three-componentreaction of 2-naphthol, substituted aldehydes and anilines in aqueous media is reported. Through screening different catalysts, reverse zinc oxide nanomicelles show good activity and high selectivity. The catalyst retained activity after six cycles of reuse and were recoverable. The method has the advantages of atom economy, short reaction time, good yield, and
β-Cyclodextrin-butane sulfonic acid: an efficient and reusable catalyst for the multicomponent synthesis of 1-amidoalkyl-2-naphthols under solvent-free conditions
A [small beta]-cyclodextrin-butane sulfonic acid is reported as an efficientcatalyst for the one-pot synthesis of 1-amidoalkyl-2-naphthols by the multicomponent condensation of aromatic aldehydes, [small beta]-naphthol and amides undersolvent-freeconditions. The...
Nano Silica Sulfuric Acid an Efficient and Recoverable Heterogeneous Catalyst for the Preparation of Amidoalkyl Naphthols Under Solvent-Free Conditions
An efficient and green method has been developed for the synthesis of amidoalkyl naphthol derivatives through a one-pot three-component condensation of 2-naphthol, aldehydes, and amide in the presence of nano silica sulfuricacid as heterogeneouscatalyst under solvent-free conditions.
An efficient and direct procedure for the synthesis of amidoalkyl naphthols has been described that employs a three-component condensation reaction in one pot using aromatic aldehydes, β-naphthol and ureas or amides in the presence of p-toluene sulfonic acid in 1,2-dichloroethane at room temperature or undersolvent-freeconditions at elevated temperature.
Cation‐Exchanged Resins: Efficient Heterogeneous Catalysts for Facile Synthesis of 1‐Amidoalkyl‐2‐naphthols from One‐Pot, Three‐Component Condensations of Amides/Ureas, Aldehydes, and 2‐Naphthol
作者:Sachin B. Patil、Pankajkumar R. Singh、Mandar P. Surpur、Shriniwas D. Samant
DOI:10.1080/00397910701263858
日期:2007.5.1
Abstract One‐pot, three‐component condensation of 2‐naphthol, amides/ureas, and aldehydes takes place smoothly in the presence of cation‐exchange resins to afford the corresponding 1‐amidoalkyl‐2‐naphthols in good yield. Indion‐130 is found to be the best catalyst for the reaction and is recyclable. The method is simple, solvent free, and involves a short reaction time.