Jump to main content
Jump to site search

Issue 6, 2021
Previous Article Next Article

Copper(ii) ions supported on functionalized graphene oxide: an organometallic nanocatalyst for oxidative amination of azoles via C–H/C–N bond activation

Author affiliations

Abstract

Graphene oxide (GO) was chemically modified with para-aminobenzoic acid (PABA) to immobilize copper(II) ions on its surface and used as a nanocatalyst for the oxidative C(sp2)–H bond amination reaction. A practical method to prepare Cu2+ supported on para-aminobenzoic acid grafted on GO was reported. The prepared Cu2+@GO/PABA was characterized by FT-IR, XRD, SEM, AFM, TEM, UV-Vis, and ICP techniques. The results showed that the morphology, distribution, and loading of copper ions could be well-adjusted by grafting of PABA on GO. Moreover, just 2 mol% of Cu2+@GO-PABA could catalyze the C–H activation reaction of benzoxazole and benzothiazole with secondary amines in >94% yields. Also, the catalyst showed very good recyclability and much less leaching of the Cu into the reaction solution. The high activity of Cu2+@GO-PABA can be ascribed to the good synergistic effects of Cu2+ and para-aminobenzoic acid grafted on graphene oxide.

Graphical abstract: Copper(ii) ions supported on functionalized graphene oxide: an organometallic nanocatalyst for oxidative amination of azoles via C–H/C–N bond activation

Back to tab navigation

Supplementary files

Article information


Submitted
11 May 2020
Accepted
26 Nov 2020
First published
08 Dec 2020

New J. Chem., 2021,45, 3242-3251
Article type
Paper

Copper(II) ions supported on functionalized graphene oxide: an organometallic nanocatalyst for oxidative amination of azoles via C–H/C–N bond activation

M. Behzadi, M. Mahmoodi Hashemi, M. Roknizadeh, S. Nasiri and A. Ramazani Saadatabadi, New J. Chem., 2021, 45, 3242
DOI: 10.1039/D0NJ02385J

Social activity

Search articles by author

Spotlight

Advertisements