Supported palladium oxide nanoparticles in Al-SBA-15 as an efficient and reusable catalyst for the synthesis of pyranopyrazole and benzylpyrazolyl coumarin derivatives via multicomponent reactions期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Supported palladium oxide nanoparticles in Al-SBA-15 as an efficient and reusable catalyst for the synthesis of pyranopyrazole and benzylpyrazolyl coumarin derivatives via multicomponent reactions

Authors:	Heravi Majid M Malakooti Reihaneh Kafshdarzadeh Kosar Amiri Zahra Zadsirjan Vahideh Atashin Hassan

Institution:	1.Department of Chemistry, School of Physics and Chemistry, Alzahra University, Vanak, Tehran, Iran ;2.Nanochemistry Research Laboratory, Department of Chemistry, University of Birjand, P. O. Box: 97175-615, Birjand, Iran ;

Abstract:	An eco-friendly method for diversity-oriented synthesis of substituted dihydropyrano2,3-c]pyrazole and benzylpyrazolyl coumarin derivatives has been achieved via one-pot and multicomponent reaction in the presence of PdO/Al-SBA-15 as an efficient and recyclable catalyst in H₂O/EtOH under reflux conditions. The significant merits of this method are wide scope, high yields of the desired products, short reaction times and simple workup procedure. In addition, this nanocatalyst was simply recovered and reused five times without significant loss in catalytic activity and also performance. Graphical abstract

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