Solventless Synthesis of 1-(α-aminoalkyl) Naphthols, Betti Bases, Catalyzed by Nanoparticle Fe<sub>3</sub>O<sub>4</sub> at Room Temperature
作者:Fatemeh Janati、Majid M. Heravi、Ahmad Mir Shokraie
DOI:10.1080/15533174.2012.762381
日期:2015.1.2
A series of 1-(alpha-aminoalkyl) naphthols were synthesized expeditiously in good yields and selectivity from 2-naphthol, alkylamines and aldehydes in the presence of nanoparticle Fe3O4 at room temperature in solvent-free conditions.
Non-ionic surfactant catalyzed synthesis of Betti base in water
作者:Atul Kumar、Maneesh Kumar Gupta、Mukesh Kumar
DOI:10.1016/j.tetlet.2010.01.056
日期:2010.3
We have developed an efficient non-ionic surfactant (Triton X-100) catalyzed multicomponent synthesis of Betti base from secondary amine, aromatic aldehydes, and beta-naphthol using Mannich-type reaction in water. Lewis and Bronsted acid catalysts, ionic and non-ionic surfactant have been screened for the reaction. Non-ionic surfactant (Triton X-100) gave the best results and the reaction proceeds through the imine formation, which is stabilized by colloidal dispersion and undergoes nucleophilic addition to afford the corresponding N,N-dialkylated Betti base in excellent yields. (C) 2010 Elsevier Ltd. All rights reserved.
Metal-free new synthesis of 1,3-naphthoxazines via intramolecular cross dehydrogenative-coupling reaction of 1-(α-aminoalkyl)-2-naphthols using hypervalent iodine(III) reagent
作者:Nitin A. Waghmode、Amit H. Kalbandhe、Prerana B. Thorat、Nandkishor N. Karade
DOI:10.1016/j.tetlet.2015.12.117
日期:2016.2
A series of 1-(α-aminoalkyl)-2-naphthols were synthesized via three-component Betti reaction of β-naphthol, aldehyde, and cyclic secondary amine under reflux conditions. The subsequent reactions of 1-(α-aminoalkyl)-2-naphthols with (diacetoxyiodo)benzene resulted in the formation of 1,3-napthoxazines. This reaction demonstrates the formation of CO bond via cross dehydrogenative-coupling (CDC) under