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   a design for convenient and greener root towards one-pot multi-component synthesis of substituted pyrano-dichromeneo-dione and chromeno-pyrido-pyrimidinone derivatives using rice husk based heterogeneous catalyst  
   
نویسنده dey sourav ,basak puja ,sarkar subhajit ,ghosh pranab
منبع asian journal of green chemistry - 2022 - دوره : 6 - شماره : 1 - صفحه:24 -39
چکیده    In this work, a convenient and greener procedure for synthesizing substituted pyrano-dichromeno-dione and substituted chromeno-pyrido-pyrimidinone derivatives were explored using sulphonated rice husk (srh) as a novel bio-degradable, greener, heterogeneous catalyst. we designed an efficient pseudo three-component synthetic method for 7-aryl/heteroaryl substituted pyranodichromene-6, 8-dione and 7-aryl/heteroaryl substituted chromeno[4, 3-d]pyrido[1, 2-a]pyrimidinone derivatives using this greener catalyst (srh) under reasonable reaction condition. the fundamental features of this procedure are the operational simplicity, hassle-free recovery of product, and reusability of the catalyst with excellent product yield (up to 98%). the toxic metal-free catalyst was prepared conveniently, and characterized using different spectroscopic techniques, including fourier-transform infrared spectroscopy (ftir), x-ray diffraction analysis (xrd), scanning electron microscopy (sem), energy dispersive x-ray spectroscopy (edx). then the synthesized material was used for the greener synthetic target.
کلیدواژه multicomponent reaction ,aromatic aldehydes ,sulphonated rice husk ,greener catalyst
آدرس university of north bengal, department of chemistry, india, university of north bengal, department of chemistry, india, university of north bengal, department of chemistry, india, university of north bengal, department of chemistry, india
پست الکترونیکی pizy12@yahoo.com
 
     
   
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