Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 7, Issue 15, Pages 12697-12706Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.8b05772
Keywords
Sonogashira cross-coupling reaction; Perovskite catalyst; Ligand free heterogenized catalyst
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Funding
- National Research Foundation, South Africa (NRF)
- University of KwaZulu-Natal
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An environmentally friendly Sonogashira cross-coupling reaction is described in this study with high potential for application in a fluidized system. The LaCo0.9Ni0.05Pd0.05O3 perovskite based catalyst provided a high turnover frequency (TOF) of 900 h(-1) via mainly a heterogeneous mechanism in an environmentally friendly mixed medium of water and acetonitrile. Nanosized Pd(0) sites were anchored to the surface of perovskite using an in situ formed colloidal agent. This capsulizing agent was found to consist of organic compounds containing iodine atoms that interacted strongly with basic sites of the hydrophobic perovskite carrier using adsorption forces. This study illustrates a unique and strong principle for designing green heterogeneous catalysts for common valuable organic reactions.
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