Mesoporous Au/Fe2O3 catalyst for propargylamines synthesis via CH2Cl2 under visible light irradiation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

Mesoporous Au/Fe2O3 catalyst for propargylamines synthesis via CH2Cl2 under visible light irradiation

Authors:	Berrichi Amina Bailiche Zahra Bachir Redouane

Affiliation:	1.Laboratory of Catalysis and Synthesis in Organic Chemistry, University of Tlemcen, BP 119, 13000, Tlemcen, Algeria ;2.Science Institut, University of Ain Temouchent, BP 284, 46000, Ain Temouchent, Algeria ;

Abstract:	The AHA coupling of amines, haloalkane and alkynes under UV visible light was achieved with a higher yield in the presence of Au/Fe₂O₃. The catalyst was prepared by two methods using different gold content and then characterized by XRD, UV–vis, BET, TEM, ICP-OES and TPR spectroscopies. A comparative study of the ordinary and photocatalytic conditions, showed that the UV visible light could activate the gold nanoparticles and lead to the formation of CH₂Cl^? and Cl^? radicals through CH₂Cl₂ fragmentation. The propargylamine was afforded at low temperature and a short time using 2% Au/Fe₂O₃. The catalyst was stable for five cycles with good photoactivity. Graphical abstract

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