Functionalized CoFe2O4/lamellar mesopore silica anchored to melamine nanocomposite as a novel catalyst for synthesis of 4H‐chromenes under mild conditions. (18th March 2020)

• Record Type: Journal Article
• Authors: Mohammadi, Somaye; Naeimi, Hossein
• Is Part Of: Applied organometallic chemistry. Volume 34:Number 6(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-03-18
• Subjects: 4H‐Chromene -- cyclohexanone -- lamellar -- Malononitrile -- Mesopore silica; Organometallic chemistry -- Periodicals; Organometallic compounds -- Periodicals; 547.05
• DOI: 10.1002/aoc.5630
• Languages: English
• ISSNs: 0268-2605

Abstract

Abstract : In this research, it was displayed an efficient method for the one‐pot reaction of cyclohexanone, benzaldehyde and malononitrile for the synthesis of 4H‐chromenes by using CoFe2 O4 /lamellar mesopore silica anchored to melamine as a magnetic nanocatalyst. This nanocatalyst was prepared in several steps and discriminated by XRD, FT‐IR, SEM, VSM, TGA and BET techniques. The catalyst has a large active base site that has functionalized in both the surface and the pore of nanostructure. The advantages of magnetic nanocatalyst were simple accessible, heterogeneous nanocatalyst, easy work up and reusability. The various derivatives of 4H‐chromenes were synthesized in the presence of CoFe2 O4 /lamellar mesopore silica/melamine magnetic nanocatalyst with the excellent yields and appropriate times. The products were identified by the melting point, FT‐IR, 1 H NMR, 13 C NMR and C.H.N techniques. Abstract : In this research, it was displayed an efficient method for the one‐pot reaction of cyclohexanone, benzaldehyde and malononitrile for the synthesis of 4H‐chromenes by using CoFe2 O4 / lamellar mesopore silica anchored to melamine as a magnetic nanocatalyst.