Copper Acetylacetonate–Immobilized Halloysite Nanotube: An Efficient Natural and Green Catalyst for the Synthesis of 4 H ‐Chromenes at Room Temperature
Year: 2024
Type: article
Abstract: ABSTRACT A new copper acetylacetonate immobilized on halloysite nanotube (HNT) was synthesized. For this purpose, (3‐aminopropyl)trimethoxysilane (AMPTSi) was covalently bonded to the surface of halloysite nanotubes, and then copper acetylacetonate was immobilized onto the modified support. The chemical and physical structure of Cu(acac) 2 /AMPTSi/HNTs were characterized via various analyses such as TEM, SEM, EDS, FTIR, XRD, TGA, and N 2 adsorption–desorption. The efficiency of this catalyst was studied in a one‐pot three‐component reaction of benzaldehydes, dimedone, and malononitrile/ethyl cyanoacetate for the synthesis of 4 H ‐chromenes. For all substrates, good to excellent yields of the corresponding 4 H ‐chromenes were obtained.
Source: Applied Organometallic Chemistry
DOI: 10.1002/aoc.7944
Authors: Seyed Ali Mousavi‐Mashhadi, Ali Shiri
Institution: Ferdowsi University of Mashhad
Language: English
Subfield: Organic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: bronze
Funder: Ferdowsi University of Mashhad
OpenAlex ID: W4405531502