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Synthesis of 9,9-dimethyl-12-(aryl)-8,9,10,12-tetrahydrobenzo[a]xanthene-11- ones by modified kaolinite nanoclay as an efficient and reusable heterogeneous catalyst via a green protocol

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Title Synthesis of 9,9-dimethyl-12-(aryl)-8,9,10,12-tetrahydrobenzo[a]xanthene-11- ones by modified kaolinite nanoclay as an efficient and reusable heterogeneous catalyst via a green protocol
 
Creator Bamoniri, Abdolhamid
lou, Reza Delqavi Khalifa
Yaghmaeiyan, Nahid
 
Subject Nano-kaolin-SO3H
xanthene
2-naphthol
dimedone
aromatic aldehyde
nanoclay
heterogeneous
 
Description 599-606
9,9-Dimethyl-12-(aryl)-8,9,10,12-tetrahydrobenzo[a]xanthene-11-one derivatives have been prepared via three
component reaction of various aromatic aldehydes, dimedone and 2-naphthol. This green methodology has been effectively
catalyzed by sulfonyl- functionalized kaolinite nanoclay (nano-kaolin-SO3H) as a recoverable solid catalyst. This type of
solid acid which contains the properties of a Lewis acid (Al3+cation) and a Brønsted acid (SO3H group), has been
characterized by ATR, TEM, FESEM, EDS, EDS mapping, XRD, TGA, BET and XRF techniques. Compared with
conventional methods, this protocol has promising features for the reaction response such as simplicity in the experimental
procedure, easier work-up, shorter reaction times and ease of separation of pure products with high yields.
 
Date 2022-07-05T10:56:55Z
2022-07-05T10:56:55Z
2022-06
 
Type Article
 
Identifier 2583-1321 (Online); 0019-5103 (Print)
http://nopr.niscpr.res.in/handle/123456789/60035
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJC Vol.61(06) [June 2022]