Silicon-Induced General, Mild, and Efficient One-Pot, Three-Component Synthesis of Amidoalkyl Naphthol Libraries
作者:Tarek Salama
DOI:10.1055/s-0032-1318392
日期:——
A general mild and efficient protocol for the synthesis of amidoalkyl naphthol libraries was achieved utilizing tetrachlorosilane and zinc chloride in dichloromethane at ambient temperature via a one-pot, three-component condensation of various aldehydes, nitriles (amides), and β-naphthol.
Preparation of amidoalkyl naphthols by a three-component reaction catalyzed by 2,4,6-trichloro-1,3,5-triazine under solvent-free conditions
作者:Peng Zhang、Zhan-Hui Zhang
DOI:10.1007/s00706-008-0059-5
日期:2009.2
AbstractAn efficient one-potsynthesis of amidoalkyl naphthols is described. This involves the three-component reaction of 2-naphthol, aromatic aldehydes and amide or urea in the presence of a catalytic amount of 2,4,6-trichloro-1,3,5-triazine (TCT, cyanuric chloride) under solvent-free conditions. Graphical abstract
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.
Perchloric Acid–Silica (HClO4⋅SiO2)-Catalyzed Synthesis of 14-Alkyl- or 14-Aryl-14H-dibenzo[a,j]xanthenes andN-[(2-Hydroxynaphthalen-1-yl)methyl]amides
The synthesis of 14-aryl- or 14-alkyl-14H-dibenzo[a,j]xanthenes 3 involving the treatment of naphthalen-2-ol (1) with arenecarboxaldehydes or alkanals 2 in the presence of HClO4⋅SiO2 as a heterogeneous catalyst was achieved (Table 1), and this reaction was extended to the preparation of N-[(2-hydroxynaphthalen-1-yl)methyl]amides 5 by a three-component reaction with urea (4a) or an amide 4b–d as a third