Ulva fasciata-mediated preparation of zinc oxide nanocrystalline for one-pot multicomponent synthesis of 6-amino-3-methyl-4-phenyl-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile

International Symposium on Current Progress in Functional Materials

Cahyana, A.H.^1 ; Nurhayati^1,2 ; Utomo, B.S.B.^2 ; Ardiansah, B.^1

Department of Chemistry, Faculty of Mathematics, Natural Sciences Universitas Indonesia, Kampus UI Depok, Depok

16424, Indonesia^1

Research and Development Center for Marine and Fisheries Products Competitiveness and Biotechnology, Ministry of Marine Affairs and Fisheries Republic of Indonesia, Jl. KS Tubun, Petamburan VI, Jakarta

10260, Indonesia^2

关键词: Coprecipitation method;    Green catalysts;    ITS applications;    Multicomponent synthesis;    Multicomponents;    Nanocrystallines;    Reaction conditions;    Zinc oxide nanocrystalline;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/188/1/012053/pdf
DOI  :  10.1088/1757-899X/188/1/012053

来源: IOP

【 摘 要 】

ZnO has been successfully prepared by a simple co-precipitation method using sodium hydroxide, zinc acetate as precursor and Ulva fasciata polysaccharides as capping agent. Characterization using FTIR, XRD and SEM-EDS indicated the successful formation of ZnO nanocrystalline with crystallite size of 27.01 nm. In order to promote ZnO as a green catalyst, its application for one-pot multicomponent pyranopyrazole synthesis has been performed. Several reaction conditions have been investigated, and the highest yield (98%) was observed in the use of 10% mole of ZnO at room temperature for 90 min reaction time in aqueous medium to produce 6-amino-3-methyl-4-phenyl-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile.