γ-Fe<sub>2</sub>O<sub>3</sub>@Si-(CH<sub>2</sub>)<sub>3</sub>@mel@(CH<sub>2</sub>)<sub>4</sub>SO<sub>3</sub>H as a magnetically bifunctional and retrievable nanocatalyst for green synthesis of benzo[c]acridine-8(9<i>H</i>)-ones and 2-amino-4<i>H</i>-chromenes
作者:Fatemeh Karimirad、Farahnaz Kargar Behbahani
DOI:10.1080/24701556.2020.1802751
日期:2021.5.4
analyses. In addition, the catalytic activity of this new catalyst was investigated for the synthesis of 7,10,11,12-tetrahydrobenzo[c]acridine-8(9H)-ones from aliphatic and aromatic aldehydes, dimedone and 1-naphthylamine in excellent yields and 2-amino-4H-chromenes were provided using manufactured nanocatalyst in good-to-high yield under mild reaction condition. The γ-Fe2O3@Si-(CH2)3@melamine@butyl sulfonic
Some new substituted tetrahydroacridin-8-ones and diverse derivatives were synthesized by uncatalysed multi-component reaction of dimedone or cyclohexan-1,3-dione, alpha-naphthylamine and various (o,p,m)-substituted benzaldehydes. The in vitro anti-microbial activities of the prepared compounds were evaluated against some bacteria and fungi strains. The results suggested that the products 2a-g and 4a-g exhibited good inhibitory effect against most of the tested organisms. Especially, 2f, 2g, 4f and 4g were shown to be most effective against Rhodotorula rubra and Aspergillus parasiticus and compounds 2a, 2c, 2g, 4f and 4g proved to be effective with MIC values in the range of 3.9-7.8 mu g/ml. (C) 2008 Elsevier Masson SAS. All rights reserved.
Ultrasound-Promoted One-Pot Synthesis of 7-Aryl-7,10,11,12-tetrahydrobenzo[c]acridin-8(9H)-one Derivatives
A series of 7-aryl-7,10,11,12-tetrahydrobenzo[c]acridin-8(9H)-one derivatives were synthesized via the three-component coupling from aromatic aldehydes, 1-naphthylamine, and 5,5-dimethylcyclohexane-1,3-dione catalyzed by stannous chloride dihydrate (SnCl2 center dot 2H(2)O) under ultrasonic irradiation at room temperature. The products were isolated in good yields within short reaction times.
An efficient ultrasound-promoted method for the one-pot synthesis of 7,10,11,12-tetrahydrobenzo[c]acridin-8(9H)-one derivatives
A new, efficient and general method for preparation of 7,10,11,12-tetrahydrobenzo[c]acridin-8(9H)-one derivatives using ultrasound irradiation is reported. Under ultrasound, the reaction time is short, the yields are high and the reaction conditions are mild. (c) 2009 Elsevier B.V. All rights reserved.
l-Proline-catalysed one-pot synthesis of tetrahydrobenzo[c]acridin-8(7H)-ones at room temperature
Résumé Only 10 mol% of l-Proline in ethanol proved to be a very efficient catalyst for the one-pot synthesis of a wide variety of highly substituted tetrahydrobenzo[c]acridin-8(7H)-ones at room temperature. The key advantages of this process are high yields, cost effectiveness of the catalyst, easy work-up and the products can be directly recrystallized from hot ethanol.