Abstract
Owing to their inherent features like smaller size and higher surface area exposed to reactants, iron oxide nanoparticles have gained enormous interest and are extensively used as magnetically recyclable catalysts for various organic reactions. Herein, we report highly hydrophilic, non-aggregated, and strongly positively charged (ζ potential: + 45.7 mV) ultra-small cerium cations/complexes- stabilized maghemite nanoparticles in water as an efficient and reusable nanoscaled catalyst for the nucleophilic addition reaction of various amines with α,β-unsaturated carbonyl compounds to give corresponding β-amino derivatives under ultrasonic irradiation. The developed protocol provides several merits such as high product yields, mild reaction conditions, reusable catalyst and easy workup.
| Original language | English |
|---|---|
| Pages (from-to) | 3213-3219 |
| Number of pages | 7 |
| Journal | Journal of Inorganic and Organometallic Polymers and Materials |
| Volume | 31 |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 2021 |
Bibliographical note
Publisher Copyright:© 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
Funding
Authors are thankful to Director IIP for granting permission to publish these results. AK is thankful to CSIR, New Delhi, for providing research fellowships. The Laboratory of Nanoscale Materials and Systems, Bar-Ilan University (Israel) is acknowledged for providing the samples of hydrophilic maghemite (γ-FeO) nanoparticles that are optimally surface-doped by Lewis acidic Ce cations/complexes. 2 3 3/4+
| Funders | Funder number |
|---|---|
| Council of Scientific and Industrial Research, India |
Keywords
- Aza-Michael
- Cerium
- C–N bond
- Maghemite
- Magnetic nanoparticle
- Ultrasound
- Ultrasound